I'm looking to upgrade to a 580 from a 295 and then dedicate the 295 to physics... but I have a 750 watt psu (I think antec) psu and an intel 965. Will I need more psu to make that happen?
Thanks!
Thanks!
580gtx + 295gtx (for physics) = how any psu watts?
- Thread starter jmartin357
- Start date
toyota
Lifer
- Apr 15, 2001
- 12,957
- 1
- 0
sell the gtx295 and get something like a gts450 if you think you really need a physx card. it would be silly to use a huge dual gpu card for the 2 or 3 games you may ever even play that use hardware physx. plus only one gpu of the gtx295 would even be used. personally I would just run graphics and physx on the gtx580.
tigersty1e
Golden Member
- Dec 13, 2004
- 1,963
- 0
- 76
the gts 450 would probably pull down your 580.
some people have done physx tests with high end cards. I can't remember the actual results, but the gist is that you want a capable card for physx like a 460 at a minimum.
some people have done physx tests with high end cards. I can't remember the actual results, but the gist is that you want a capable card for physx like a 460 at a minimum.
toyota
Lifer
- Apr 15, 2001
- 12,957
- 1
- 0
no it would not. if anything the gts450 would be almost the perfect compliment to the gtx580. a gtx460 would be overkill for the most part.
btw his gtx295 would be like having something a little bit faster than a gtx260 since only one gpu would be used anyway.
Last edited:
happy medium
Lifer
- Jun 8, 2003
- 14,387
- 480
- 126
Sell the gtx295 and grab a gtx555ti for 105$, that would be perfect.
You can have some money left over for a 1tb harddrive or something.
You can have some money left over for a 1tb harddrive or something.
toyota
Lifer
- Apr 15, 2001
- 12,957
- 1
- 0
yep or just oc a gts450 to 900mhz if he can find one of those for 20-30 bucks cheaper.
happy medium
Lifer
- Jun 8, 2003
- 14,387
- 480
- 126
oh crap your right they have the same amount of sp's.
Well I would suggest something about the same sp power as a 260gtx (216).
ARe the older sp's weaker than ones on the new cards?
What I'm saying is are a 260gtx 192 sp's as strong as the gts450 192 sp's?
Mabe a cheap gtx460 SE (119$) would be better? 244 sp's
It would make a better backup card also.
toyota
Lifer
- Apr 15, 2001
- 12,957
- 1
- 0
since all physx seems to care about is the sp power, the gts450/gtx550 ti with 192sp at 1800 should easily be faster than the gtx260 216sp at 1250 or so.
basically a gts450/gtx550 ti with 192sp at 1800 should easily match a gtx275/280 for handling physx.
and as you can see here there's not much point in anything faster than that with a gtx480. of course his gtx580 is a little faster but it wont make too much difference in making a physx card choice.
gif upload
Last edited:
happy medium
Lifer
- Jun 8, 2003
- 14,387
- 480
- 126
gts450 it is,
SInce we have come up with a good solution,let me ask you this.
WHy is a 260gtx 192 faster than a gts450 or isn't it?
It can't be just the memory bandwidth right?
toyota
Lifer
- Apr 15, 2001
- 12,957
- 1
- 0
in some games the gts450 has now caught up to even the 216sp gtx260 because of newer drivers. overall though a 192sp gtx260 and 192sp gts450 would be pretty close now. the gtx260 does have much more bandwidth and also has more tmus. clock for clock the gtx260 would probably win nearly every time but the gts450 can and does run at much higher clocks.gts450 it is,
SInce we have come up with a good solution,let me ask you this.
WHy is a 260gtx 192 faster than a gts450 or isn't it?
It can't be just the memory bandwidth right?
Last edited:
happy medium
Lifer
- Jun 8, 2003
- 14,387
- 480
- 126
so, if I didn't want to mess too much with selling and buying a new card, do you folks think my psu is up to the task?
happy medium
Lifer
- Jun 8, 2003
- 14,387
- 480
- 126
Yes, it will be ok, only because it will only use 1 gpu of the gtx295.
Just don't go crazy with any sort of overclocking.
toyota
Lifer
- Apr 15, 2001
- 12,957
- 1
- 0
so you would rather fool with wastefully sticking a gtx295 in there for 2 or 3 games that use hardware physx? just sell the gtx295 and get something more appropriate. you wont have to worry about power then plus you will have some extra money. btw can you please tell me what games you are wanting to play that have hardware physx?
the batman games. I d/led the trial for asylum and it looked pretty fun, but at max settings was crazy slow. I was hoping to correct that...
happy medium
Lifer
- Jun 8, 2003
- 14,387
- 480
- 126
toyota
Lifer
- Apr 15, 2001
- 12,957
- 1
- 0
there is no way it should have been slow. I could average 40 fps at 1920x1080 with very high settings and physx on high with just a gtx260. for a game like Batman that using hardware physx you need to use one gpu for physx and the other for graphics instead of using sli.
ok, just to clarify - I have the 295 now. I maxed the game to everything, including 25x16 and physics... it was absurdly slow. that demo aside, my desire to move to the 580 is dx11 related (and yes, I realize that's roughly as awesome as my px plan )
in any case, my plan was to spend $500 on a top end card and 20 mins of install time. I was hoping to avoid ebay, fedex any any related frustration. I'm not espeically averse to upgrading the psu, but that cascades into a new ups and possibly even some electrical work. hm, I'm spending too much money on the old pc...
)in any case, my plan was to spend $500 on a top end card and 20 mins of install time. I was hoping to avoid ebay, fedex any any related frustration. I'm not espeically averse to upgrading the psu, but that cascades into a new ups and possibly even some electrical work. hm, I'm spending too much money on the old pc...
happy medium
Lifer
- Jun 8, 2003
- 14,387
- 480
- 126
ok, just to clarify - I have the 295 now. I maxed the game to everything, including 25x16 and physics... it was absurdly slow. that demo aside, my desire to move to the 580 is dx11 related (and yes, I realize that's roughly as awesome as my px plan
in any case, my plan was to spend $500 on a top end card and 20 mins of install time. I was hoping to avoid ebay, fedex any any related frustration. I'm not espeically averse to upgrading the psu, but that cascades into a new ups and possibly even some electrical work. hm, I'm spending too much money on the old pc...
I assumed your pc had a higher end cpu, what cpu are you using?
I noticed you have a Intel 965 chipset, which worries me about your cpu speed.
Your gtx295 could be running out of memory at that resolution.
Are you using tons of AA?
Mabe try dropping a setting or 2?
Last edited:
sorry for the confusion, this is the cpu:
http://ark.intel.com/products/37149
I think that still qualifies as high end...
happy medium
Lifer
- Jun 8, 2003
- 14,387
- 480
- 126
TRENDING THREADS
-
Discussion Intel current and future Lakes & Rapids thread- Started by TheF34RChannel
- Replies: 23K
-
Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000)- Started by DisEnchantment
- Replies: 10K
-
Discussion Intel Meteor, Arrow, Lunar & Panther Lakes Discussion Threads
- Started by Tigerick
- Replies: 7K
-
-
Facebook
Twitter