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I never get artifacts, just chrashes

post #1 of 2
Thread Starter 
Hi everyone.

First of all let me say thx for all the guides and helpful posts.

Ok so I'm a novice overclocker so I read a bunch of posts among others on this forum and then set out to OC my two HD 5770, I use MSI afterburer, MSI Kombustor and GPU-Z, I have tried both original catalyst drivers and the modified ones by TwL.

My rig is a s follows:
AMD Athlon II X4 630 AM3, 2,8Ghz
ASUS M4A79XTD EVO, 790X
ASUS Radeon HD 5770 1GB GDDR5
ASUS Radeon HD 5770 CuCore 1 Gb GDDR5
Corsair TX 650W PSU
Crucial DDR3 BallistiX 1333MHz 4GB CL7-7-7-24 (2*2GB)
WD1500HLFS 16MB 150GB
Samsung SpinPoint F3 500GB

Running a freshly installed w7 ultimate.

Yes my 2 GFX are slightly different, same manufacturer and chipset just a later model and from what I understand the only real difference is the cooling system. But I might be wrong.

Now to the issue, I started to OC it and I now run a stable 915/1290 (850/1200) and cV at 1.225 (1,125) but with high temps, around 87 C. Now all the guides talk about artifacts but I never get any, instead if I try to go higher I get a crash during stress test. I have tried several different settings( like only clock the CC or MC etc ) but it's always the same, no artifacts only crashes.

So my question is:

Is this normal, say some get artifacts other get crashes?
Could it be my PSU that is limiting me?
Even though I have raised the cV the VDDC value in GPU-Z still stays at 1.0000 V, is this the problem?
Edited by javidi - 1/9/11 at 4:16am
post #2 of 2
it could be your power supply, not sure if 650 watt would be enough for 2 hd5770's and overclocking them. but it could also be youve found your cards limit
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Finally Finished!
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 3930K Batch: 3135B495T Gigabyte X79 UD7 GTX 570 3-way SLi Corsair Vengeance 1600mhz CL9 
Hard DriveCoolingOSMonitor
60GB OCZ Vertex II / 3x 500GB Samsung Spinpoint EK Supreme HF Nickel, EK DCP4.0, Stealth GT 360... Windows 7 Ult 64bit Acer 22" G225HQ 
KeyboardPowerCaseMouse
Razor Lacosa Mirror Edition Silverstone Strider 1500w  Aerocool X-Preditor  CM Storm Sentinel Advanced 
Mouse Pad
Razer Goliathus Speed edition 
  hide details  
Reply
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