750 for physx?

eyetrip · 26 Jun 2015 at 18:53

Yeah, I know, dedicated physx card hardly ever gets used, etc, etc... still..

Would a little 750 go well with 980 ti sli? Or too weak?

If that too weak, gues a 750 ti would be too...

If they are, what's about the best minimum card as dedicated? Don't want to spend a lot, so going up to 960 prices might be out.

breadturbo · 26 Jun 2015 at 19:32

im interested in this actually, just grabbed a TX from the MM so I'll give it a try with my 970 as physx tomorrow and see how it goes.

varkanoid · 26 Jun 2015 at 22:29

Pointless. If a 970 cant handle physx its time to give up never mind a 980ti!

Think about it. This is an enthusiast forum. If it offered the slightest benefit dont you think everyone would do it. If you have one then you can try it but really wasting your time.

eyetrip · 27 Jun 2015 at 18:13

Well, I decided to try a 960

I know, most will think it's a waste. Mayhap so. But what the hell...

God knows how it will stack up against just running on sli'd 980 ti's.

Akagi · 27 Jun 2015 at 18:16

I expect that it will make no difference, might even make it worse, and you will have wasted a chunk of money...

eyetrip · 27 Jun 2015 at 18:21

Acme said:
I expect that it will make no difference, might even make it worse, and you will have wasted a chunk of money...

It wouldn't be the first time I wasted money and won't be the last!

Was thinking it would probably take a 970 to not be a bottleneck, but maybe will prove myself wrong.

Sick as dog with cold so needed something to do something to make me feel better. Spending money usually does that

ALXAndy · 27 Jun 2015 at 18:27

Run Fluidmark on your 980ti. Then run it on the 960.

Feel a bit silly, get annoyed at the extra heat and noise, remove card and never do it again.

I put a 770 with my Titan Blacks. Big mistake....

eyetrip · 27 Jun 2015 at 18:57

ALXAndy said:
Run Fluidmark on your 980ti. Then run it on the 960.

Feel a bit silly, get annoyed at the extra heat and noise, remove card and never do it again.

I put a 770 with my Titan Blacks. Big mistake....

Did you test games?

As for best and noise.... Meh. Not like a 960 will be putting out much heat, and it shouldn't be noisy.

Still, you may be right in that I could be utterly useless. If there is any improvement in games, then I will be happy.

As stated though, think a 970 probably would have been a better fit.

breadturbo · 27 Jun 2015 at 19:19

I ran heaven no diff whatsoever
I ran firestrike extreme none whatsoever (not even sure if it uses it though?)

titan x solo (stock 1ghz)
http://www.3dmark.com/3dm/7528919?

with strix970 as dedi physx
http://www.3dmark.com/3dm/7529098?

what else should i try?

eyetrip · 27 Jun 2015 at 19:25

breadturbo said:
I ran heaven no diff whatsoever
I ran firestrike extreme none whatsoever (not even sure if it uses it though?)

titan x solo (stock 1ghz)
http://www.3dmark.com/3dm/7528919?

with strix970 as dedi physx
http://www.3dmark.com/3dm/7529098?

what else should i try?

Try some games that support hardware physx - don't think those benches you used do even support it.

Try some batman games or mafia 2... there is a bunch listed here

breadturbo · 27 Jun 2015 at 19:39

batman downloading now, will be a good 45mins though my internet sucks and its 34gb

Greebo · 27 Jun 2015 at 19:42

I used to use a gtx260 as a physx card with my 7970.

But got bored of having two cards in the water loop so sold the gtx260 to tidy up my pc but phyx was nice on batman.

stooeh · 27 Jun 2015 at 19:43

I think there is a noticeable improvement in Batman: Arkham Origins but not many other titles. Someone posted a table with some results in a thread on here a while back.

breadturbo · 27 Jun 2015 at 19:55

It's kinda jammed in there atm in mine (camera really shows the dust!), luckily i left some slack on the longer pipe so i could snip it and add in waterblocks at some point

Churchy89 · 27 Jun 2015 at 20:00

I run a 750ti as a dedicated PhysX card alongside a couple of Titan Blacks and have been quite impressed with the improvements it brings in games that support hardware Physx. Obviously, there's not a huge amount of games that support it so whether it is justifiable cost wise is questionable but I'm happy with the results personally.

In addition to increasing fps, I also found that it made games smoother when running SLI. For example, Batman Arkham Origins had some stutter when running high Physx on just the SLI Titan Blacks but offloading the Physx to the 750ti eliminated it completely. I'm not sure exactly why this was the case but my best guess is that it had something to do with the Physx calculations only ever being performed on one card i.e. they can't be split between the SLI cards. This creates an uneven workload with one of the SLI cards having to do the Physx on top of the normal frame rendering which lead to the stuttering.

r7slayer · 27 Jun 2015 at 20:03

Linus did a test with another nvidia acting as a physx card along side a dedicated nvidia card and it actually gave worse performance than just letting the more powerful dedicated card handle the physx.

Something about it being slower to respond to rendering stuff where the dedicated card would have to wait for the less powerful physx card to finish rendering the physx stuff before it could go onto rendering the next frame.

So i wouldn't bother blowing more money that gives you next to no performance.

https://www.youtube.com/watch?v=cbww3dhzK0M

That is the video but it is 4 years old so things may have changed since then.

eyetrip · 27 Jun 2015 at 20:04

Well, this experiment may go nowhere quickly, thanks to this stupid bloody z97x g1 mobo.

Doesn't like having gpus arrange in 16x slots 1,3,4. Wants them 1,2/1,2,3/1,2,3,4. And don't know if I care to try changing my loop around to accommodate .

Soon as I have the 960 in slot 4, 2nd 980ti not available! Will have a dig in bios settings, but think my only options are forget about it, or rearrange loop...

God I hate this board...

breadturbo · 27 Jun 2015 at 21:35

Here are the results for Arkham Knight.

Settings used.....

First run with Titan X by itself

Second run with 970 as dedicated physx

The titan was pretty much maxed out for the entirety of both runs, the 970 hovered at 50% use as dedi physx only! with some jumps to 75%
Overall the benchmark look MASSIVELY smoother, almost movie perfect.

Have to say I was impressed with the difference, the second i clicked start on the benchmark with the 970 i said 'wow'!

eyetrip · 27 Jun 2015 at 21:43

Well, I had some time with single 980 Ti using 960 fr physx, and it was a much smoother experience. Benchmark score beat sli Gtx 980 Ti by a little bit

Five.Stars · 27 Jun 2015 at 22:01

breadturbo said:
Here are the results for Arkham Knight.

Settings used.....

First run with Titan X by itself

Second run with 970 as dedicated physx

The titan was pretty much maxed out for the entirety of both runs, the 970 hovered at 50% use as dedi physx only! with some jumps to 75%
Overall the benchmark look MASSIVELY smoother, almost movie perfect.

Have to say I was impressed with the difference, the second i clicked start on the benchmark with the 970 i said 'wow'!

Cheers for that. I have got a spare 970 (replaced it with a 980Ti in 2nd rig). Was going to sell it, but may just hang on to it for a bit and stick it in beside my TX.