I got a AMD dual core 3800 from OCUK last month - stepping CCBWF 0601XPMW I think I might have wrote that down wrong though as Google doesnt return any results for that. Anyhoo I tried clocking it this morning, I put it straight up too 215FSB default volts, it booted fine and passed 10 minutes prime, so I tried 220 it failed prime in the first minute, so I upped volts to 1.4 and again it failed in the first minute. I've tried it all the way up to 1.6 volt but it still fails, it wont go passed 215 It runs 2 instances of prime for over an hour fine, but any higher and it fails instantly. Any ideas whats going on here? Abit AT8 1 GIG Geil PC3200 Ultra-X Artic cooler 64 Temp 28oC, load 36oC
Hmm I dont even use prime tbh.. i use very demanding games to test stability.. Has your pc crashed yet ? Someone will come along soon, and tell you every reason why prime FAILS though lol
Sounds like your ram may need the volts upping or try looser timmings or run a divider. If your cpu volts arent helping then it has to be ram or the HTT
The RAM is set at 200mhz, so thats not a problem I am not sure what that is, can you explain? I've had a look through the Bios and I cant find anything regarding HTT multi
Hyper Transport something.. Basically it needs to be kept under 1000.. otherwise the computer will be unstable.. It might be in the BIOS as the LDT
Right, I just set LDT to 1000 and now I am getting BSODs, should I try 800? and will that affect performance?
if the ram is set at "200" in the bios that means it will scale with your cpu. ie you ram is running 1:1 with the HTT. hence why its strugglin at 220. try setting it to "166" Tom
Indeed I was wrong I set the RAM to 166 and its overclocking nicely now. Thanks mate But how do I know what speed my RAM is running at now?
cpuz will tell you or download A64MemFreq 1.1 thats a nifty program which will calculate mem speeds and cpu speeds etc. google it Tom
Cheers Welshtom you have been a great help Test 5 Prime now stable at 2.5G Cant go any higher with FSB as memory craps out I'll rise multi and see how much she does
62 degrees is a little high! keep lowering the divider (which im guessing you are doing) when the ram tops out. thats where the program comes in handy. Do you have a good contact with the heatsink and the cpu. 62 seems a bit high for that cooler. Tom
Welshtom it seems fine though. I am running two instances of prime now - 20 mins and its stable RAM is at 205 2,3,3,8 Well chuffed with the CPU
Need some better RAM is this stuff any good? - OCZ 2GB (2 x 1GB) PC4000 Dual Channel Gold GX XTC Series EL-DDR CAS3 (OCZ5002048ELGEGXT-K) (MY-060-OC) What would you chaps recommended? Under £250 for 2GIG Edit: Wow these chips are awesome - she just booted in windows at 2.9G, but odviously failed prime as after a few seconds, with some more volts and water cooling she would easy run @ 2.9G.
The HyperTransport can be set to 1000MHz, 800MHz, 600MHz, 400MHz or 200MHz in the BIOS. This corresponds to an HT multiplier of 5x, 4x, 3x, 2x or 1x respectively and it is calculated by the HTT*HT Multiplier As you don't want the HT speed to go over 1GHz, the 1GHz setting is only suitable for the stock HTT speed of 200MHz. Set it to 800MHz for up to 250MHz HTT, 600MHz to 333MHz HTT, etc
