389 products found
Memory - Product Filter
     
 
Corsair Vengeance LPX 16GB (2x8GB) DDR4 PC4-24000C15 3000MHz Dual Channel Kit - Black (CMK16GX4M2B30

3000MHz RAM Speed, CAS 15-17-17-35 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Corsair Vengeance LPX 16GB (2x8GB) DDR4 PC4-24000C15 3000MHz Dual Channel Kit - Black (CMK16GX4M2B30
 

10+ In stock

£119.99

(1)
Kingston Fury Black 16GB (2x8GB) DDR4 PC4-19200C15 2400MHz Dual Channel Kit - Black (HX424C15FB2K2/1

2400MHz RAM Speed, CAS 15-15-15-35 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Kingston Fury Black 16GB (2x8GB) DDR4 PC4-19200C15 2400MHz Dual Channel Kit - Black (HX424C15FB2K2/1
 

10+ In stock

£109.99

Team Group Elite Black 8GB (2x4GB) DDR3 PC3-12800C11 1600MHz Dual Channel Kit (TPKD38G1600HC11DC01)

1600MHz RAM Speed, CAS 11-11-11-28 Timings, 1.50-1.60v VDIMM, Lifetime Warranty with OcUK.

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Team Group Elite Black 8GB (2x4GB) DDR3 PC3-12800C11 1600MHz Dual Channel Kit (TPKD38G1600HC11DC01)
 

46 In stock

£49.99

(5)
Team Group Elite 16GB (2x8GB) DDR4 PC4-19200C16 2400MHz Dual Channel Kit - Black (TPKD416GM2400HC16D

2400MHz RAM Speed, CAS 16-16-16-36 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Team Group Elite 16GB (2x8GB) DDR4 PC4-19200C16 2400MHz Dual Channel Kit - Black (TPKD416GM2400HC16D
 

20+ In stock

£89.99

Team Group Elite 8GB (2x4GB) DDR4 PC4-19200C16 2400MHz Dual Channel Kit - Black (TPKD48GM2400HC16DC0

2400MHz RAM Speed, CAS 16-16-16-36 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Team Group Elite 8GB (2x4GB) DDR4 PC4-19200C16 2400MHz Dual Channel Kit - Black (TPKD48GM2400HC16DC0
 

20+ In stock

£52.99

Team Group Elite Black 16GB (2x8GB) DDR3 PC3-12800C11 1600MHz Dual Channel Kit (TPKD316G1600HC11DC01

1600MHz RAM Speed, CAS 11-11-11-28 Timings, 1.50-1.60v VDIMM, Lifetime Warranty with OcUK.

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Team Group Elite Black 16GB (2x8GB) DDR3 PC3-12800C11 1600MHz Dual Channel Kit (TPKD316G1600HC11DC01
 

20+ In stock

£98.99

 
Corsair Vengeance LPX 16GB (2x8GB) DDR4 PC4-25600C16 3200MHz Dual Channel Kit - Black (CMK16GX4M2B32

3200MHz RAM Speed, CAS 16-18-18-36 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Corsair Vengeance LPX 16GB (2x8GB) DDR4 PC4-25600C16 3200MHz Dual Channel Kit - Black (CMK16GX4M2B32
 

10+ In stock

£119.99

(1)
Corsair Vengeance LPX 16GB (2x8GB) DDR4 PC4-21300C16 2666MHz Dual Channel Kit - Black (CMK16GX4M2A26

2666MHz RAM Speed, CAS 16-18-18-35 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Corsair Vengeance LPX 16GB (2x8GB) DDR4 PC4-21300C16 2666MHz Dual Channel Kit - Black (CMK16GX4M2A26
 

10+ In stock

£109.99

Kingston Fury Black 16GB (2x8GB) DDR4 PC4-21300C15 2666MHz Dual Channel Kit - Black (HX426C15FBK2/16

2666MHz RAM Speed, CAS 15-15-15-36 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Kingston Fury Black 16GB (2x8GB) DDR4 PC4-21300C15 2666MHz Dual Channel Kit - Black (HX426C15FBK2/16
 

10+ In stock

£119.99

Corsair Vengeance Pro Red 16GB (2x8GB) DDR3 PC3-19200C11 2400MHz Dual Channel Memory Kit (CMY16GX3M2

2400MHz RAM Speed, CAS 11-13-13-31 Timings, 1.50-1.65v VDIMM, Lifetime Warranty with Corsair.

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Corsair Vengeance Pro Red 16GB (2x8GB) DDR3 PC3-19200C11 2400MHz Dual Channel Memory Kit (CMY16GX3M2
 

10+ In stock

£109.99

(3)
Team Group Elite 16GB (4x4GB) DDR4 PC4-19200C16 2400MHz Quad Channel Kit - Black (TPKD416GM2400HC16Q

2400MHz RAM Speed, CAS 16-16-16-36 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Team Group Elite 16GB (4x4GB) DDR4 PC4-19200C16 2400MHz Quad Channel Kit - Black (TPKD416GM2400HC16Q
 

20+ In stock

£79.99

(4)
Kingston Fury Black 8GB (2x4GB) DDR4 PC4-21300C15 2666MHz Dual Channel Kit - Black (HX426C15FBK2/8)

2666MHz RAM Speed, CAS 15-15-15-36 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Kingston Fury Black 8GB (2x4GB) DDR4 PC4-21300C15 2666MHz Dual Channel Kit - Black (HX426C15FBK2/8)
 

14 In stock

£59.99

Corsair Vengeance LPX 16GB (2x8GB) DDR4 PC4-19200C14 2400MHz Dual Channel Kit - Black (CMK16GX4M2A24

2400MHz RAM Speed, CAS 14-16-16-31 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Corsair Vengeance LPX 16GB (2x8GB) DDR4 PC4-19200C14 2400MHz Dual Channel Kit - Black (CMK16GX4M2A24
 

10+ In stock

£109.99

(1)
Kingston Fury Black 8GB (2x4GB) DDR4 PC4-19200C15 2400MHz Dual Channel Kit - Black (HX424C15FBK2/8)

2400MHz RAM Speed, CAS 15-15-15-35 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Kingston Fury Black 8GB (2x4GB) DDR4 PC4-19200C15 2400MHz Dual Channel Kit - Black (HX424C15FBK2/8)
 

20+ In stock

£59.99

Kingston HyperX Fury Black 8GB (2x4GB) DDR3 PC3-14900C10 1866MHz Dual Channel Kit (HX318C10FBK2/8)

1866MHz RAM Speed, CAS 10-10-10-28 Timings, 1.50-1.65v VDIMM, Lifetime Warranty with Kingston.

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Kingston HyperX Fury Black 8GB (2x4GB) DDR3 PC3-14900C10 1866MHz Dual Channel Kit (HX318C10FBK2/8)
 

48 In stock

£49.99

Corsair Dominator Platinum 16GB (2x8GB) DDR4 PC4-24000C15 3000MHz Dual Channel Kit - Black (CMD16GX4

3000MHz RAM Speed, CAS 15-17-17-35 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Corsair Dominator Platinum 16GB (2x8GB) DDR4 PC4-24000C15 3000MHz Dual Channel Kit - Black (CMD16GX4
 

4 In stock

£139.99

 
Ballistix Sport 8GB (2x4GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit (BLS2CP4G3D1609DS1S00CEU)

1600MHz RAM Speed, CAS 9-9-9-27 Timings, 1.5v VDIMM, Lifetime Warranty with Ballistix.

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Ballistix Sport 8GB (2x4GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit (BLS2CP4G3D1609DS1S00CEU)
 

Out of stock

£29.99

(8)
 
Ballistix Sport 16GB (2x8GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit (BLS2CP8G3D1609DS1S00CEU)

1600MHz RAM Speed, CAS 9-9-9-27 Timings, 1.5v VDIMM, Lifetime Warranty with Ballistix.

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Ballistix Sport 16GB (2x8GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit (BLS2CP8G3D1609DS1S00CEU)
 

Out of stock

£89.99

Team Group Dark 16GB (2x8GB) DDR4 PC4-24000C16 3000MHz Dual Channel Kit - Black (TDKED416G3000HC16AD

3000MHz RAM Speed, CAS 16-16-16-36 Timings, 1.25-1.35v VDIMM, Lifetime Warranty with OcUK.

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Team Group Dark 16GB (2x8GB) DDR4 PC4-24000C16 3000MHz Dual Channel Kit - Black (TDKED416G3000HC16AD
 

Out of stock

£98.99

Team Group Vulcan GOLD 8GB (2x4GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit (TLYED38G1600HC9DC01)

1600MHz RAM Speed, CAS 9-9-9-24 Timings, 1.50-1.60v VDIMM, Lifetime Warranty with OcUK.

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Team Group Vulcan GOLD 8GB (2x4GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit (TLYED38G1600HC9DC01)
 

38 In stock

£49.99

(3)
 
Kingston HyperX Savage Red 8GB (2x4GB) DDR3 PC3-19200C11 2400MHz Dual Channel Kit (HX324C11SRK2/8)

2400MHz RAM Speed, CAS 11-11-11-35 Timings, 1.50-1.65v VDIMM, Lifetime Warranty with Kingston.

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Kingston HyperX Savage Red 8GB (2x4GB) DDR3 PC3-19200C11 2400MHz Dual Channel Kit (HX324C11SRK2/8)
 

6 In stock

£55.99

(2)
Kingston HyperX Fury Black 16GB (2x8GB) DDR3 PC3-14900C10 1866MHz Dual Channel Kit (HX318C10FBK2/16)

1866MHz RAM Speed, CAS 10-10-10-28 Timings, 1.50-1.65v VDIMM, Lifetime Warranty with Kingston.

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Kingston HyperX Fury Black 16GB (2x8GB) DDR3 PC3-14900C10 1866MHz Dual Channel Kit (HX318C10FBK2/16)
 

20+ In stock

£94.99

Corsair Vengeance LPX 16GB (2x8GB) DDR4 PC4-25600C16 3200MHz Dual Channel Kit - Red (CMK16GX4M2B3200

3200MHz RAM Speed, CAS 16-18-18-36 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Corsair Vengeance LPX 16GB (2x8GB) DDR4 PC4-25600C16 3200MHz Dual Channel Kit - Red (CMK16GX4M2B3200
 

10+ In stock

£119.99

Team Group Elite 32GB (4x8GB) DDR4 PC4-19200C16 2400MHz Quad Channel Kit - Black (TPKD432GM2400HC16Q

UK's Lowest Price on a 2400MHz 32GB Quad Channel DDR4 kit compatible with Haswell-E and Skylake processors!!

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Team Group Elite 32GB (4x8GB) DDR4 PC4-19200C16 2400MHz Quad Channel Kit - Black (TPKD432GM2400HC16Q
 

10+ In stock

£188.99

 
Kingston HyperX Savage Red 16GB (2x8GB) DDR3 PC3-19200C11 2400MHz Dual Channel Kit (HX324C11SRK2/16)

2400MHz RAM Speed, CAS 11-11-11-35 Timings, 1.50-1.65v VDIMM, Lifetime Warranty with Kingston.

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Kingston HyperX Savage Red 16GB (2x8GB) DDR3 PC3-19200C11 2400MHz Dual Channel Kit (HX324C11SRK2/16)
 

10+ In stock

£109.99

(3)
Corsair Vengeance LPX 8GB (2x4GB) DDR4 PC4-19200C14 2400MHz Dual Channel Kit - Black (CMK8GX4M2A2400

2400MHz RAM Speed, CAS 14-16-16-31 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Corsair Vengeance LPX 8GB (2x4GB) DDR4 PC4-19200C14 2400MHz Dual Channel Kit - Black (CMK8GX4M2A2400
 

20+ In stock

£59.99

Kingston HyperX Fury Black 16GB (2x8GB) DDR3 PC3-12800C10 1600MHz Dual Channel Kit (HX316C10FBK2/16)

1600MHz RAM Speed, CAS 10-10-10-28 Timings, 1.50-1.65v VDIMM, Lifetime Warranty with Kingston.

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Kingston HyperX Fury Black 16GB (2x8GB) DDR3 PC3-12800C10 1600MHz Dual Channel Kit (HX316C10FBK2/16)
 

9 In stock

£94.99

Kingston HyperX Fury Black 8GB (2x4GB) DDR3 PC3-12800C10 1600MHz Dual Channel Kit (HX316C10FBK2/8)

1600MHz RAM Speed, CAS 10-10-10-28 Timings, 1.50-1.65v VDIMM, Lifetime Warranty with Kingston.

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Kingston HyperX Fury Black 8GB (2x4GB) DDR3 PC3-12800C10 1600MHz Dual Channel Kit (HX316C10FBK2/8)
 

24 In stock

£49.99

(1)
Kingston HyperX Fury Red 16GB (2x8GB) DDR3 PC3-14900C10 1866MHz Dual Channel Kit (HX318C10FRK2/16)

1866MHz RAM Speed, CAS 10-10-10-28 Timings, 1.50-1.65v VDIMM, Lifetime Warranty with Kingston.

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Kingston HyperX Fury Red 16GB (2x8GB) DDR3 PC3-14900C10 1866MHz Dual Channel Kit (HX318C10FRK2/16)
 

10+ In stock

£109.99

Team Group Vulcan RED 16GB (2x8GB) DDR3 PC3-19200C11 2400MHz Dual Channel Kit (TLRED316G2400HC11CDC0

2400MHz RAM Speed, CAS 11-13-13-35 Timings, 1.55-1.65v VDIMM, Lifetime Warranty with OcUK.

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Team Group Vulcan RED 16GB (2x8GB) DDR3 PC3-19200C11 2400MHz Dual Channel Kit (TLRED316G2400HC11CDC0
 

10+ In stock

£109.99

(2)
Corsair Dominator Platinum 16GB (2x8GB) DDR4 PC4-25600C16 3200MHz Dual Channel Kit (CMD16GX4M2B3200C

3200MHz RAM Speed, CAS 16-18-18-36 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Corsair Dominator Platinum 16GB (2x8GB) DDR4 PC4-25600C16 3200MHz Dual Channel Kit (CMD16GX4M2B3200C
 

9 In stock

£169.99

Corsair Vengeance LPX 8GB (2x4GB) DDR4 PC4-25600C16 3200MHz Dual Channel Kit - Black (CMK8GX4M2B3200

3200MHz RAM Speed, CAS 16-18-18-36 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Corsair Vengeance LPX 8GB (2x4GB) DDR4 PC4-25600C16 3200MHz Dual Channel Kit - Black (CMK8GX4M2B3200
 

16 In stock

£68.99

Team Group Vulcan GOLD 16GB (2x8GB) DDR3 PC3-17100C11 2133MHz Dual Channel Kit (TLYED316G2133HC11ADC

2133MHz RAM Speed, CAS 11-11-11-31 Timings, 1.55-1.65v VDIMM, Lifetime Warranty with OcUK.

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Team Group Vulcan GOLD 16GB (2x8GB) DDR3 PC3-17100C11 2133MHz Dual Channel Kit (TLYED316G2133HC11ADC
 

12 In stock

£98.99

Corsair Vengeance LPX 8GB (2x4GB) DDR4 PC4-24000C15 3000MHz Dual Channel Kit - Black (CMK8GX4M2B3000

3000MHz RAM Speed, CAS 15-17-17-35 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Corsair Vengeance LPX 8GB (2x4GB) DDR4 PC4-24000C15 3000MHz Dual Channel Kit - Black (CMK8GX4M2B3000
 

10 In stock

£68.99

(1)
Corsair Vengeance 32GB (4x8GB) DDR4 PC4-21300C16 2666MHz Quad Channel Kit - Black (CMK32GX4M4A2666C1

2666MHz RAM Speed, CAS 16-18-18-35 Timings, 1.20-1.25v VDIMM, Lifetime Warranty with OcUK.

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Corsair Vengeance 32GB (4x8GB) DDR4 PC4-21300C16 2666MHz Quad Channel Kit - Black (CMK32GX4M4A2666C1
 

10+ In stock

£209.99

Kingston Fury Black 16GB (2x8GB) DDR4 PC4-17000C14 2133MHz Dual Channel Kit - Black (HX421C14FB2K2/1

2133MHz RAM Speed, CAS 14-14-14-31 Timings, 1.20-1.25v VDIMM, Lifetime Warranty with OcUK.

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Kingston Fury Black 16GB (2x8GB) DDR4 PC4-17000C14 2133MHz Dual Channel Kit - Black (HX421C14FB2K2/1
 

17 In stock

£98.99

Kingston Fury Black 32GB (4x8GB) DDR4 PC4-19200C15 2400MHz Quad Channel Kit - Black (HX424C15FB2K4/3

2400MHz RAM Speed, CAS 15-15-15-35 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Kingston Fury Black 32GB (4x8GB) DDR4 PC4-19200C15 2400MHz Quad Channel Kit - Black (HX424C15FB2K4/3
 

9 In stock

£188.99

 
Avexir Core Red Series 16GB (2x8GB) DDR4 PC4-19200C16 2400MHz Dual Channel Kit (AVD4UZ124001608G-2CI

2400MHz RAM Speed, CAS 16-16-16-36 Timings, 1.20-1.30v VDIMM, LED Strobe Lights, Lifetime Warranty with Avexir.

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Avexir Core Red Series 16GB (2x8GB) DDR4 PC4-19200C16 2400MHz Dual Channel Kit (AVD4UZ124001608G-2CI
 

Out of stock

£119.99

Team Group Elite 32GB (2x16GB) DDR4 PC4-19200C16 2400MHz Dual Channel Kit - Black (TPKD432G2400HC16D

2400MHz RAM Speed, CAS 16-16-16-36 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Team Group Elite 32GB (2x16GB) DDR4 PC4-19200C16 2400MHz Dual Channel Kit - Black (TPKD432G2400HC16D
 

10+ In stock

£179.99

Kingston Fury Black 8GB (1x8GB) DDR4 PC4-17000C14 2133MHz Single Channel Module - Black (HX421C14FB2

2133MHz RAM Speed, CAS 14-14-14-31 Timings, 1.20-1.25v VDIMM, Lifetime Warranty with OcUK.

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Kingston Fury Black 8GB (1x8GB) DDR4 PC4-17000C14 2133MHz Single Channel Module - Black (HX421C14FB2
 

18 In stock

£55.99

Corsair Vengeance Low Profile 16GB (2x8GB) DDR3 PC3-12800C10 1600MHz Dual Channel Kit (CML16GX3M2A16

1600MHz RAM Speed, CAS 10-10-10-27 Timings, 1.5-1.6v VDIMM, Lifetime Warranty with Corsair.

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Corsair Vengeance Low Profile 16GB (2x8GB) DDR3 PC3-12800C10 1600MHz Dual Channel Kit (CML16GX3M2A16
 

8 In stock

£99.95

(4)
Avexir Core Blue Series 16GB (2x8GB) DDR4 PC4-19200C16 2400MHz Dual Channel Kit (AVD4UZ124001608G-2C

2400MHz RAM Speed, CAS 16-16-16-36 Timings, 1.20-1.30v VDIMM, LED Strobe Lights, Lifetime Warranty with Avexir.

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Avexir Core Blue Series 16GB (2x8GB) DDR4 PC4-19200C16 2400MHz Dual Channel Kit (AVD4UZ124001608G-2C
 

Out of stock

£119.99

Corsair Vengeance LPX 8GB (2x4GB) DDR4 PC4-21300C16 2666MHz Dual Channel Kit - Black (CMK8GX4M2A2666

2666MHz RAM Speed, CAS 16-18-18-35 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Corsair Vengeance LPX 8GB (2x4GB) DDR4 PC4-21300C16 2666MHz Dual Channel Kit - Black (CMK8GX4M2A2666
 

20+ In stock

£59.99

Kingston HyperX Fury White 16GB (2x8GB) DDR3 PC3-14900C10 1866MHz Dual Channel Kit (HX318C10FWK2/16)

1866MHz RAM Speed, CAS 10-10-10-28 Timings, 1.50-1.65v VDIMM, Lifetime Warranty with Kingston.

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Kingston HyperX Fury White 16GB (2x8GB) DDR3 PC3-14900C10 1866MHz Dual Channel Kit (HX318C10FWK2/16)
 

9 In stock

£89.99

Corsair Vengeance LPX 32GB (2x16GB) DDR4 PC4-19200C14 2400MHz Dual Channel Kit - Black (CMK32GX4M2A2

2400MHz RAM Speed, CAS 14-16-16-31 Timings, 1.20-1.35v VDIMM, Lifetime Warranty with OcUK.

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Corsair Vengeance LPX 32GB (2x16GB) DDR4 PC4-19200C14 2400MHz Dual Channel Kit - Black (CMK32GX4M2A2
 

ETA: 09.12.16

£209.99

Corsair Vengeance Pro Red 16GB (2x8GB) DDR3 PC3-17100C11 2133MHz Dual Channel Memory Kit (CMY16GX3M2

2133MHz RAM Speed, CAS 11-11-11-27 Timings, 1.50-1.65v VDIMM, Lifetime Warranty with Corsair.

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Corsair Vengeance Pro Red 16GB (2x8GB) DDR3 PC3-17100C11 2133MHz Dual Channel Memory Kit (CMY16GX3M2
 

5 In stock

£109.99

Corsair Vengeance 32GB (4x8GB) DDR4 PC4-21300C16 2666MHz Quad Channel Kit - Red (CMK32GX4M4A2666C16R

2666MHz RAM Speed, CAS 16-18-18-35 Timings, 1.20-1.25v VDIMM, Lifetime Warranty with OcUK.

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Corsair Vengeance 32GB (4x8GB) DDR4 PC4-21300C16 2666MHz Quad Channel Kit - Red (CMK32GX4M4A2666C16R
 

10+ In stock

£179.99

Corsair Vengeance Pro Red 8GB (2x4GB) DDR3 PC3-19200C11 2400MHz Dual Channel Memory Kit (CMY8GX3M2A2

2400MHz RAM Speed, CAS 11-13-13-31 Timings, 1.50-1.65v VDIMM, Lifetime Warranty with Corsair.

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Corsair Vengeance Pro Red 8GB (2x4GB) DDR3 PC3-19200C11 2400MHz Dual Channel Memory Kit (CMY8GX3M2A2
 

10 In stock

£55.99

     
  BUZZ
Corsair Vengeance LPX 64GB (4x16GB) DDR4... Corsair Vengeance LPX 64GB (4x16GB) DDR4 PC4-21300C16 2666MHz Dual/Quad Channel Kit - Black (CMK64GX
Skynet Gearhead Review 17 Oct 2016 Why buy 64gb Ram? are you mad? Yes I say, I purchased this ram for Rendering video's, every second counts. more...
Avexir Blitz Original Silver 16GB (2x8GB)... Avexir Blitz Original Silver 16GB (2x8GB) DDR4 PC4-24000C16 3000MHz Dual Channel Memory Kit - White
Joe Review 17 Oct 2016 Well, RAM is RAM. I rammed it into my motherboard and it works a treat, and looks good doing so with the pulsating light. I would definitely recommend. more...
Memory

An Introduction to RAM

There are many types of computer memory; here we focus on RAM, or random access memory, the temporary memory accessed by the CPU to perform various tasks.

RAM is a integral component of your computer, responsible for processing data. It is called RAM because the CPU can “randomly access” memory cells on the RAM chip. It is much faster to locate data in RAM than to access other types of memory, such as the hard drive. Because of this, RAM is often contrasted with serial access memory, or SAM, which must be accessed sequentially until your computer locates the relevant data.

How RAM Works with Your System

RAM is managed by a memory controller embedded in the CPU, the central processing unit found within a computer that is responsible for data retrieval. If the CPU always had to access the hard drive each time, the recall of data would be slowed significantly. By storing the information in other types of memory, such as RAM, the CPU is able to access it much quicker, and therefore the operating system is maintained through the RAM, as are any applications. When you save or close a file, this is then relocated to the main storage space and removed from the RAM. Because of this, RAM is considered a ‘volatile’ type of memory, meaning that when the computer in turned off, the contents of the memory is lost. This result is a smoother, faster, less power-intensive system.

Types of RAM: Static RAM (SRAM) and Dynamic RAM (DRAM)

RAM is generally divided into two categories: static RAM (SRAM) and dynamic RAM (DRAM). Both are a volatile form of memory, but the main difference is the technology used to hold data. Whilst DRAM refreshes thousands of times per second, SRAM, by contrast, does not need to refresh and so is typically faster. However, DRAM is the standard when it comes to consumer level RAM because SRAM is more expensive and generally used for memory caching. Below is a table of the different types of SRAM and DRAM:

SRAMDRAM
Async FPM
Sync EDO
Pipeline Burst BEDO
  RDRAM

SDRAM and DDR

SDRAM (Synchronous Dynamic Random Access Memory) was developed in the 1990s to meet the needs of more powerful computers. Traditional DRAM used an asynchronous interface which worked independent of the processor, which was not ideal since DRAM was unable to keep up with the processor speed. SDRAM synchronises the memory's responses to control inputs, enabling it to queue processes for the quick execution of tasks.

DDR and its subsequent models is the most commonly used type of RAM, and is current standard for consumers. Since its introduction, it has gone through several development stages. DDR (Double Data Rate) was the initial model, introduced in 2000. DDR RAM is able to send and receive signals twice per cycle, as opposed to one, meaning that data transfers were twice as fast. It also decreased the clock rate, consumed less energy, and achieved faster speeds. DDR2 is double the rate of DDR. This was then succeeded by DDR3, which features four clock speeds: 1333Mhz, 1600Mhz, 1866Mhz, and 2133Mhz. Finally, DDR4 is the latest model, and provides a greater range of clock speeds and timings, lower power consumption, as well as reduced latency.

Considerations when installing RAM

Is More RAM Always Better?

Increasing the amount of RAM won’t necessarily lead to faster processing speeds. First, your hardware must physically match the RAM you want install. Since DDR DRAM is the standard, it’s important to ensure that your hardware is compatible; DDR, DDR2, DDR3 and DDR4 chips all feature a unique number of pins. If the RAM you purchased does not match the version required for your motherboard, it will not be physically possible to install it.

Clock Speeds

A second consideration is the clock speed. For the most part, the motherboard will determine the type of RAM that can be installed in the computer. The memory specs of your machine will have this information. If the motherboard supports DDR3 memories up to 1,333 MHz, then it’s advisable to use RAM of the same power. There are two reasons for this: anything less and your computer won’t achieve its full performance potential, and anything more could mean that the processor is unable to run at the same pace, causing the computer to lag.

A second thing to note is that today’s CPUs have built-in memory controllers showing what RAM is supported. Typically these match those found on the motherboard. However, in some cases the motherboard will allow you to install RAM at a clock speed that exceeds the official maximum supported by the memory controller.

CL: Column Access Strobe (CAS) Latency

CL or CAS latency is the time taken for the memory controller to signal the memory module to access a particular memory column on the RAM. It is the time delay between when a command is entered and executed. There are two variables: the number of clock cycles, and the duration of each one. CAS latency is expressed as number; on DDR RAM this will appear as a code such as CL14. As a rule, the lower the CAS latency, the faster it is.

Voltage

A fourth consideration is voltage. Most DDR3 RAM runs at 1.5V, but it can range from as low as 1.25V to as high as 1.8V. DDR4 RAM features a new voltage called VPP; the standard for DDR4 is 1.2V, but it goes as low as 1.05V. There are slight differences to note: when compared with DDR3 RAM, DDR4 provides higher transfer rates at a lower voltage, which is better for performance and system stability over time. Whilst increasing voltage does improve performance, increasing the voltage of RAM can create problems because a higher voltage leads to more heat generation and power consumption. For overclocking, it should not be necessary to exceed 1.7V.

Dual, Triple or Quad-Channel

Increasing the number of channels increases the speed between the RAM and the memory controller. Dual-channel architecture doubles the available memory bandwidth from 64 to 128 bits, triple-channel to 192 bits, and quad-channel to 256 bits. Because modules will be accessed at the same time, it’s important to use identical RAM: same capacity, timings, and clock rate. It’s also advisable to use the same brand for increased synchronicity.

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