5570 poor memory overclock?

gavin19 · 16 Jun 2011 at 14:45

I bought a cheap 5570 to put in an older PC for light gaming. The model I picked up was a VTX3D. I neglected to check the specs, but after installing it I noticed core/memory speeds of 650/667. I know speeds between manufacturers but the stock speeds are supposed to be 650/900. That's a hell of a difference.

The thing is, I can get the core up to around 920 without the temps going crazy, but the memory will only get to 840 before it starts to glitch. Is this due to the gimped stock memory speed of 667? I ask because I read of people getting much higher than 840.

Cheers.

twist3d0n3 · 16 Jun 2011 at 17:51

the clue is in your link you posted

Memory Clock:1333MHz (667MHz DDR3)

667MHz x2 = 1333MHz clock speed. they're not supposed to run at 900.

cjgardens · 16 Jun 2011 at 18:28

Clocking the memory does not make that much odds anyway

spleenharvester · 16 Jun 2011 at 19:33

cjgardens said:
Clocking the memory does not make that much odds anyway

This. On the 8800GT for example, clocking the memory made 3.4% difference - that's an extra 3.4 frames for every 100. Core and shaders are what you should be clocking, keep the memory at stock and it'll extend the card's life.

Surveyor · 16 Jun 2011 at 22:34

There are versions of the 5570 with 1800MHz memory (900 x 2).

Unfortunately you've bought a slower version with 1333MHz memory (667 x 2).