Radeon RX VEGA 64 8GB HBM2 PCI-Express Graphics Card - STAND ALONE

  • 21275-02-20G
  • Stand Alone
  • Core Clock: 1247MHz
  • Boost Clock: 1546MHz
  • Memory: 8192MB 945MHz HBM2
  • Stream Processors: 4096
  • DirectX 12 Support
  • Vulkan Support
  • GCN
  • 2 Year Warranty
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Stock Code: GX-387-SP

EAN: 4895106283657

MPN: 21275-02-20G

Manufacturer: Sapphire

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Product information:

Radeon RX VEGA 64 8GB HBM2 PCI-Express Graphics Card - STAND ALONE

Sapphire Radeon RX Vega 64, 8192 MB HBM2 High-end gaming graphics card from AMD, max. 1.546 MHz GPU Boost Clock, 8 GB HBM2 VRAM, 3x DisplayPort 1.4 / 1x HDMI, Radial-fan air cooling For the Gamers

As a true high-end graphics card for gamers the AMD Radeon RX Vega comes kitted out with a multitude of features and is designed for gaming in 4K resolution as well as immersion in Virtual Reality (VR). With 8 GB of 2nd gen High Bandwidth Memory (HBM2) as well as the redesigned Vega GPU architecture, the Radeon RX Vega represents the current gaming flagship of the Texan chip manufacturer. The Radeon RX Vega graphics cards are designed for PC gamers and are perfect to combine with a FreeSync monitor, as this allows for smoother tear-free image reproduction!

The Sapphire Radeon RX Vega 64 offered here provides 8 GB HBM2 memory clocked at 945 MHz and is connected to the GPU by means of a 2048-Bit memory interface. One of the unique features of HBM memory is the fact that it is located on the GPU die (that is to say, in the graphics chip) and not, as is normally the case, distributed around the GPU. The GPU itself is clocked at 1.247 MHz and can be clocked up to 1.546 MHz in Boost Mode.

The better cooling the GPU receives, the longer it can maintain its boost clocks. The cooling of the Sapphire Radeon RX Vega 64 is provided by a radial-style cooler design. The fan is located in the rear of the card and draws air out of the case, which is then blown over the PCB and out. The advantage of this style of cooling is that warm air is exhausted directly out of the case.

The Features of the AMD Radeon RX Vega 64:

AMD Radeon RX Vega 64
  • Brand new Vega architecture
  • Huge 8 GB HBM2-VRAM
  • 64 Next-Gen Compute Units (NCUs; 4.096 Shader)
  • Base Clock: 1.247 MHz
  • Boost Clock: 1.546 MHz
  • High Bandwidth Cache Controller (HBCC)
  • Rapid Packed Math (RPM) on NCUs
  • New Programmable Geometry Pipeline
  • Enhanced Pixel Engine
  • Air-cooled with radial-style fan

The Architecture of AMD Radeon Vega Graphics Cards

The Vega architecture not only contains a variety of optimisation in comparison to the Graphics Core Next architecture of previous generations, instead it represents a completely new element. In this way Vega GPU architecture builds on a foundation consisting of four new pillars:

  • High Bandwidth Cache Controller (HBCC)
  • Rapid Packed Math (RPM) of Next-Gen Compute Units (NCU)
  • New Programmable Geometry Pipeline
  • Enhanced Pixel Engine

High Bandwidth Cache Controller (HBCC)

AMDs High Bandwidth Cache Controller (HBCC) The High Bandwidth Cache Controller (HBCC) enables a marked improvement in the effective utilisation of the HBM (High Bandwidth Memory) modules when compared to Fiji-generation GPUs which were the first to benefit from this unique type of memory. The HBC Controller also allows for highly efficient memory control as well as increasing the minimum Frames per Second (FPS) in many games by up to 100% and the maximum FPS by more than 50%. This means the 8 GB HBM2-VRAM of the Radeon RX Vega performs to a similar level as 16 GB of GDDR5!

Next-Gen Compute Unit (NCU) & Rapid Packed Math (RPM)

Rapid Packed Math (RPM) of the Next-Gen Compute Units (NCU) Rapid Packed Math (RPM) is a feature of the Next-Gen Compute Unit (NCU) and utilises the highly flexible core structure of the new compute units. For example, RPM accelerates FP16 calculations to allow mathematically-oriented processes to be calculated more quickly. With RPM activated this doubles the number of calculations capable of being carried out per second without requiring additional resources. Rapid Packed Math is of particular benefit to physics-based calculations, as seen in large explosions featuring in games.

New Programmable Geometry Pipeline

Die New Programmable Geometry Pipeline von AMD Vega The new programmable geometry pipeline of the Vega architecture is capable of processing, thanks to its efficient load balancing, many millions of polygons simultaneously. The AMD Radeon Vega Frontier Edition Air offers a maximum geometry calculation capacity of 11 polygons (with the help of 4 Geometry Units) per clock, doubling that of the Radeon R9 Fury X with its 4 polygons per clock. Modelling applications in particular benefit from this, and furthermore this enables large 3D models to be renders in near real-time.

Enhanced Pixel Engine

The Enhanced Pixel Engine also unleashes an optimised Shade Unit design, one which provides notable performance increases at high resolutions (WQHD, UHD) and in displaying virtual reality. In specific terms the Enhanced Pixel Engine provides a new rasterizer technology which optimises cache localisation while creating more efficient rendering processes.

In order for the card to reach its maximum potential, new drivers should be downloaded and installed at regular intervals from the AMD website.

Technical Details:
  • Dimensions: 280 x 127 x 40 mm (W × H × D)
  • Slot Height: 2-Slot
  • GPU: AMD Radeon Vega ("Vega 10")
    Manufacturing Process: 14 nm
    GPU Frequency: 1.247 MHz
    Gaming Mode (Boost): 1.546 MHz
    Shader Units: 4.096
  • VRAM: 8.192 MB
    Memory Frequency: 945 MHz
    Type: High Bandwidth Memory der 2. Generation (HBM2)
    Memory Bus Bandwidth: 2.048 Bit
    Memory Throughput: ca. 484 GB/s
  • Slot Type: PCIe x16 (PCIe / PCIe 2.x / PCIe 3.0)
  • Ports:
    3x DisplayPort 1.4 HBR3/HDR Ready
    1x HDMI
  • Typical Power Usage Under Load: 295 Watt
  • Power Supply Connectors: 2x 8-Pin PCIe
    Recommended Power Supply: min. 750 Watt
  • Features: OpenCL 2.0, OpenGL 4.5, Vulkan API, AMD Eyefinity Technology, AMD PowerTune Technology, AMD FreeSync Technology Support, AMD XConnect Technology

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Customer review

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Average customer rating

(from 4 customer reviews)
All Time (4)

Fast, but with inconveniences

A very fast card, marred by some annoying stuff.

Firstly, AMD stopped releasing Win8 drivers before they started supporting the Vega 64. If you're running Win8, you'll need to install the Win7 drivers.

Secondly, the card has no DVI ports. If your current monitor doesn't have a Displayport or a more recent HDMI revision, you can't run over 60 Hz.

Thirdly, the card doesn't behave well if you have multiple monitors running at different refresh rates.

I took my older 120 Hz non-DP monitor, plugged it in via HDMI, and can only run it at 60 Hz. I took my newer 144 Hz monitor, plugged it in via DP, and had noticeable stutter on the 144 Hz monitor. Running the faster monitor at 120 Hz didn't fix the stutter. In the end I had to plug the old monitor into my onboard intel graphics as a display adaptor, and fix games to fullscreen.

None of these problems are specific to this card, and mos't aren't specific to AMD, but the inconvenience is something I wouldn't anticipate with a premium bit of tech. It's very possible that none of these problems will affect you, but it's probably worth investigating before buying.

All that said, the card is stupidly quick. I'm currently in that `play all of your games at maxed settings and capped framerate' phase. The main reason I chose the Vega 64 was GPU rendering in Blender3d cycles, and for this the card is amazing.

Andrew 2017-11-28


Before I start, I am an AMD fangirl so take what I say with a pinch of salt. Added to that I've upgraded from an RX 460 so it's going to be a big improvment anyway.

System specs: R7 1700x, Ram 3200 mhz, MB asus x370, HD NVME, PSU thermaltake tough power dps g (gold standard 750W).

The GPU runs off a single split power cable from my PSU (had heard some required two seperate cables to run the juice on).

99% of the time the card is silent and I'm running it in a thermaltake P3 chasis that sits on my desk next to me. Under load it does rev up and make some noise but nothing offensive (I intend to get water cooling anyway).

I can't say I play many high end games but everything I do play is running at a minimum of 90 FPS on ultra settings though I confess to owning a freesync monitior.
Colours are deeper and detail is increased even on my 1080p monitor.

I bought a Saphire reference card so I can install a water cooler next year however so far this card runs at arond 35 degrees idle and only heats up once in a while.

My purchase was made at £470 and the card arrived the next day by DPD. I have nothing negative to say on my purchase and Overclockers UK made it simple and fast from purchase to recieving my card the next day.

One problem for some might be the weight of the card since it's quite a hefty piece of gear. Myself I have a riser cable so it doesn'r hand off the board. But to be honest if it were hanging off the MB at a right angle I don't think I'd feel comfortable without some extra support but I guess that goes for most high end GPUs.


Agricola 2017-11-04

Very Happy

I got back into the high spec pc game a few months ago and had wanted this GFX card then but it obviously wasn't available so I opted for the RX 580 8GB thinking it would still be able to handle everything I threw at it...

i.e High resolution texture mod for GTA 5.

Although the RX580 was a brilliant card and can support Ultra GFX on most games I was still a bit disappointed.

So, I sold that card and have now upgraded to the RX Vega 64 version and I am not disappointed at all.

Little niggling things that I was noticing from time to time in other games with the RX 580 have gone.

Overall, I'd say if you can afford it, then go for it.

Also, I don't know why but the advertised clock speeds here don't seem right on any of the listings.

Base Clock: 1.247 MHz
Boost Clock: 1.546 MHz

My Core clock on Vega 64 is definitely 1.630MHz

I checked this elsewhere online and 1.630MHz seems to be the correct core clock speed.

Luke 2017-09-07

Very happy with card and service

Very happy with the card performance, got a nice price from OCUK and was delivered next day.

The card loves to be under water.

Would recommend OCUK and the product.

Paul 2017-08-23

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