Posts by omega17

It's based purely on core speed, the CPU PhysX is single-threaded, so it scales on one single core speed. You may get a couple of extra frames from tighter RAM, but it probably won't help PhysX.

Quote:Originally Posted by Johnny Rook I'm using an old GTS 250 for PhysX and I have to say this mid-range card still does the job quite well in Borderlands 2. With a HD5970 as primary render @1080p, the framerates don't drop to...

The 7970 has to 'wait' for data from the PhysX card before it can be rendered. The 9800 calculates where stuff should go, and the 7970 draws it. If the 9800 can't keep up, the 7970 will halt, in extreme cases.

Yeah the Batmans, both games seemed to work pretty well on High Physx with the 640. I didn't test or get any numbers, but it seemed pretty smooth.

I meant 640 memory bandwidth, it's only DDR3 memory. The slots aren't saturated, its x79 Pcie 3.0, with the two 7970s at 16x and the 640 at 8x

Could be, but the same thing happens with the CPU, one liquid source is fine, any more seems to choke it.

The blood pools are basically massive collections of particles; because your CPU is calculating the physx, and it's limited to one core, your GPUs have to wait. Same happens with mine, a 3930k at 4.5ghz.

I'm considering borrowing a 560 off a friend to try it out, it bothers me that I can shoot one skag and it'll bleed everywhere, and there's no slowdown at all, but as soon as 2 or more bandits bleed out, it tanks to 25fps. Makes me think...

I got rid of my 640, I got better results on just my 3930k with 2x 7970s. Still tanks when there's a lot of blood, and I think I need to reinstall physx coz I'm not getting goo coming out the toilets on high Physx, but the 640...

Quote:Originally Posted by Swolern Quote:Originally Posted by omega17 After further testing, I still get silly slowdowns to 35 / 40 FPS when there's blood or fluid goo on-screen, seems to be really badly optimised, with either...