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Can't OC CPU and GPU at same time

H

hans030390

Diamond Member
Overclocking my computer has given me nothing but problems. I tried overclocking my GPU without problems (fairly conservative OC). This was with an ATI 5770 (850/1200 to 900/1350). A different time, I tried overclocking my CPU without much of a problem. Again, this was a conservative OC (2.8 to 3Ghz with my Athlon II 240).

When I overclock each separately, things seem to be stable with testing. However, when I try overclocking both at the same time, my computer crashes regularly. For example, running Furmark with both overclocked causes my computer to display a screen full of garbage (usually it's just alternating colored vertical lines) after a few seconds of testing. I then have to manually restart my machine.

On a side note, one time I was testing a small OC with AMD Overdrive (no GPU OC). I set everything back to default (no OC) and closed the program. A few seconds later, my computer crashed and the screen was full of garbage again.

Here is my setup:

Athlon II X2 240
Sapphire ATI Radeon 5770 w/ VF900 cooler
ECS A780GM-A Ultra Motherboard
4GB Corsair XMS2 DDR2-1066 (2 x 2GB)
500 Watt Rosewill PSU:
+3.3V@24A, +5V@20A, +12V1@19A, +12V2@18A, -12V@0.5A, +5VSB@2.5A
 
hans030390 said:
Overclocking my computer has given me nothing but problems. I tried overclocking my GPU without problems (fairly conservative OC). This was with an ATI 5770 (850/1200 to 900/1350). A different time, I tried overclocking my CPU without much of a problem. Again, this was a conservative OC (2.8 to 3Ghz with my Athlon II 240).

When I overclock each separately, things seem to be stable with testing. However, when I try overclocking both at the same time, my computer crashes regularly. For example, running Furmark with both overclocked causes my computer to display a screen full of garbage (usually it's just alternating colored vertical lines) after a few seconds of testing. I then have to manually restart my machine.

On a side note, one time I was testing a small OC with AMD Overdrive (no GPU OC). I set everything back to default (no OC) and closed the program. A few seconds later, my computer crashed and the screen was full of garbage again.

Here is my setup:

Athlon II X2 240
Sapphire ATI Radeon 5770 w/ VF900 cooler
ECS A780GM-A Ultra Motherboard
4GB Corsair XMS2 DDR2-1066 (2 x 2GB)
500 Watt Rosewill PSU:
+3.3V@24A, +5V@20A, +12V1@19A, +12V2@18A, -12V@0.5A, +5VSB@2.5A
Click to expand...


im no expert but back in the day i distinctly remember running into similar issues on my old rig. ended up being PSU sucked hardcore.

correct me if im wrong though AT
 
hans030390 said:
Wouldn't surprise me. The motherboard is pretty crappy when it comes to overclocking. How could I further test to pinpoint the exact problem?
Click to expand...

Swap out either one for a known good component?... It's usually easier to start with the PSU.
 
Plimogz said:
Swap out either one for a known good component?... It's usually easier to start with the PSU.
Click to expand...

Well, yeah...but I don't want to have to drop money on a part that might not be the cause of the issue. However, I might be able to borrow an extra PSU from a friend...
 
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