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View Full Version : Is a single 8800GTX more powerful than two 7800GTX SLI's?


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wazooda
03-22-07, 07:50 PM
I have a pair of BFG 7800GTX SLI's watercooled editions that I picked up about a year and a half ago.

Outside of the Directx10 issue, is the 8800 that much more powerful than what I currently have? Is 8800GTX SLI even more so?

I have not been able to find comparisons between the two.

TIA!

Wazoo

|MaguS|
03-22-07, 08:06 PM
god yes... I went from 7800GTX SLi to 8800GTX SLi and would never look back...

wazooda
03-22-07, 08:20 PM
god yes... I went from 7800GTX SLi to 8800GTX SLi and would never look back...

Wow! Ok... good to know....

Are you air or water cooling? I see BFG has a watercooled version available.

I *hate* installing waterblocks. It is a real PITA!

wollyka
03-22-07, 08:22 PM
i went from 7800GTX SLI to 1 8800GTX.. and yes it is faster than both :)

|MaguS|
03-22-07, 08:24 PM
Wow! Ok... good to know....

Are you air or water cooling? I see BFG has a watercooled version available.

I *hate* installing waterblocks. It is a real PITA!

Air cooled untill I grow balls to go water cooling...

kevJ420
03-22-07, 08:26 PM
Yes it's mos definately more powerful, but even if it wasn't you would still get perfect af with an 8800gtx.

SlieTheSecond
03-22-07, 08:38 PM
A single 8800 GTS is on par and faster than sli 7800gtx

wazooda
03-22-07, 08:38 PM
i went from 7800GTX SLI to 1 8800GTX.. and yes it is faster than both :)

That blows me away. ONE 8800 is fast than TWO 7800's?!?!

Amazing.

Let me ask though: Is it *noticeably* faster or marginally faster?

Put another way, what percentage increase would you estimate you see with one 8800 over 7800 SLI?

wazooda
03-22-07, 08:41 PM
Air cooled untill I grow balls to go water cooling...

I went the pre-plumbed case route from Koolance as I didn't have the time or inclination to plumb a case from scratch. Been a dream.

VERY quiet... and it keeps my 2 7800's and CPU quite cool.

Cyant
03-22-07, 08:50 PM
Not only it's faster but it also look a lot better with better AA and MUCH MUCH better Anisotropic Filtering.

SlieTheSecond
03-22-07, 08:54 PM
That blows me away. ONE 8800 is fast than TWO 7800's?!?!

Amazing.

Let me ask though: Is it *noticeably* faster or marginally faster?

Put another way, what percentage increase would you estimate you see with one 8800 over 7800 SLI?
http://www23.tomshardware.com/graphics.html?modelx=33&model1=522&model2=606&chart=204
According to that, 16 fps in oblivion outdoors. Thats pretty good if you ask me.

Half life 2 pulls in over twice the fps. At 64.9 more

Blacklash
03-22-07, 09:04 PM
You may find this interesting-

http://img67.imageshack.us/img67/8940/fol1600xp8.gif

http://img65.imageshack.us/img65/8848/foliagehdr1600slisa4.gif

Madpistol
03-22-07, 10:36 PM
Yea. The 8800 GTX is DEFINATELY faster than 2x 7800 GTX SLI. The 8800 GTX utterly destroys the SLI config.

wazooda
03-22-07, 10:55 PM
Funny that I don't find many 8800GTX SLI reviews.

Even the helpful Tom's Guide posted above does not have 8800 SLI as an option.

I can't imagine they are CPU limited in every resolution....

Madpistol
03-22-07, 11:27 PM
Funny that I don't find many 8800GTX SLI reviews.

Even the helpful Tom's Guide posted above does not have 8800 SLI as an option.

I can't imagine they are CPU limited in every resolution....

You have no idea... 2x 8800 GTX SLI is CPU limited in virtually everything. On 3dmark06, you get about a 2000 point difference between an X6800 + 1 8800 GTX and an X6800 + 2x 8800 GTX.

It's just not worth the $600.

methimpikehoses
03-22-07, 11:45 PM
The 8800GTX is a BEAST. I thought my 8800GTS was a beast until I put in the new card today.

Stock 3dmark06 on a GTS was about 8900, stock GTX is 10950.

GTX = absolute BEAST.

(alf)

SH64
03-23-07, 01:20 AM
Yep! sometimes its even faster than 2xX1900XTX's!

SlieTheSecond
03-23-07, 02:18 AM
Ya it's really about time they made a beast.
I was starting to get sick and tired of Duke Nukem 3D being a side scroller.

Who remember the days where games where all text based :)


I can't wait to see where we will be in 50 years. Reality maby? Like movie brainscan.

Xion X2
03-23-07, 02:41 AM
You have no idea... 2x 8800 GTX SLI is CPU limited in virtually everything. On 3dmark06, you get about a 2000 point difference between an X6800 + 1 8800 GTX and an X6800 + 2x 8800 GTX.

It's just not worth the $600.

Come on, now. You know better.. or you should. 3dM is just not optimized for SLI very well.

In many games, 8800GTX SLI will get you more than double the performance of a single card. Call of Juarez in thick grass goes from 45fps to up over 100 at maximum settings, for example. Oblivion goes from ~30 in thick forests up over 60, etc.

It depends on the game, but there are many applications where two cards more than double the performance of a single card. I think it's a bit presumptuous to say 8800GTX SLI is "cpu limited" because of that. It's more dependant on the application and how well it's coded to take advantage of a dual-card config.

But in just about every game out there you will see very significant gains with dual 8800GTXs.

Slammin
03-23-07, 06:07 AM
You have no idea... 2x 8800 GTX SLI is CPU limited in virtually everything. On 3dmark06, you get about a 2000 point difference between an X6800 + 1 8800 GTX and an X6800 + 2x 8800 GTX.

It's just not worth the $600.


Don't know if this link will work, but this http://service.futuremark.com/compare?3dm06=1423185

blows your theory out of the water :D

And I only have GTS's!

Grov
03-23-07, 09:43 AM
Come on, now. You know better.. or you should. 3dM is just not optimized for SLI very well.

In many games, 8800GTX SLI will get you more than double the performance of a single card. Call of Juarez in thick grass goes from 45fps to up over 100 at maximum settings, for example. Oblivion goes from ~30 in thick forests up over 60, etc.

It depends on the game, but there are many applications where two cards more than double the performance of a single card. I think it's a bit presumptuous to say 8800GTX SLI is "cpu limited" because of that. It's more dependant on the application and how well it's coded to take advantage of a dual-card config.

But in just about every game out there you will see very significant gains with dual 8800GTXs.

Sorry but thats really not true. There are tonnes of games that have very little difference, and double the frame rate is just pure rubbish. Fact is SLI 8800 is very CPU limted, and not worth it except on overclocked Conroe's, though it's not worth it full stop IMO, cause SLI is ****.

wollyka
03-23-07, 10:02 AM
That blows me away. ONE 8800 is fast than TWO 7800's?!?!

Amazing.

Let me ask though: Is it *noticeably* faster or marginally faster?

Put another way, what percentage increase would you estimate you see with one 8800 over 7800 SLI?
Good question.. i can say somehow noticeably faster.. it depends on games.. For example in Oblivion i set more higher quality (went from 2X AA to 16XCSAA and from 8AF to 16 AF) and it still 15% faster!! (btw my resolution is max 1280*1024 i should get a bigger LCD lol)

Madpistol
03-23-07, 10:24 AM
Don't know if this link will work, but this http://service.futuremark.com/compare?3dm06=1423185

blows your theory out of the water :D

And I only have GTS's!

link links back to 2 of mine to compare, so apparently the link is bad. Try again.

Madpistol
03-23-07, 10:26 AM
Sorry but thats really not true. There are tonnes of games that have very little difference, and double the frame rate is just pure rubbish. Fact is SLI 8800 is very CPU limted, and not worth it except on overclocked Conroe's, though it's not worth it full stop IMO, cause SLI is ****.

I wouldn't say SLI is ****. It's wonderful if you don't have a CPU bottleneck. Honestly, I think my single 8800 GTX is being bottlenecked by my E6600 @ 3.2Ghz even, which is just insane.

1 8800 GTX is freakishly powerful.

2 8800 GTX's is overkill.

SeraTech
03-23-07, 10:33 AM
Sorry but thats really not true. There are tonnes of games that have very little difference, and double the frame rate is just pure rubbish. Fact is SLI 8800 is very CPU limted, and not worth it except on overclocked Conroe's, though it's not worth it full stop IMO, cause SLI is ****.

You're partially right about the CPU limitation, but not anymore than that.

If an application supports SLI (or rather the driver has SLI support for the application), then SLI can scale +80%, and in some instances to +99%.

First time I experienced excellent scaling with SLI, was with F.E.A.R. 16*CSAA / 16*AF, everything else maxed (no SS) 1680*1050:

Minimum framerate went from 20 fps to 41 fps.

SLI gives diminishing returns, if you don't use either extreme resolutions (2560*1600 is always a good example), extreme settings (16*AA / 16*AF everything else maxed), or both ...

The point with SLI is that is for those who play with resolution/settings, where one single 8800 GTX simply isn't enough, and they wont compromise.

Hothardware had a good article about 8800 GTX SLI and high resolutions:

http://www.hothardware.com/viewarticle.aspx?page=8&articleid=917

I'll have my 3007FWP-HC screen by monday/tuesday, and I am sure I wont look back with regret.

Rig:

EVGA 680i
Tuniq Tower 120
Intel QX6700
4 * 1024mb G-Skill PC6400 (4096mb)
2 * XFX 8800 GTX 768mb SLI
X-Fi Fatal1ty Pro 64mb
WD Raptor 36gb 16mb
WD RaptorX 150gb 16mb
Enermax Galaxy 1000W
Samsung 225BW (Dell 3007 WFP-HC soon)