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Question about running games in High res.

Last response: in Overclocking
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September 10, 2006 7:37:00 PM

Alright I was thinking about finally going for dual SLI cards for my pc setup. I recently Bought a 23inch lcd monitor and the recommended resolution is 1900x1200 however when I try to run games with my 7800gt card I get huge lag spikes when playing mmo's and there is alot of fighting going on its like a slide show and its driving me crazy.

I have been looking at the 7900gtx's thinking about getting them in a sli setup, but my question is what two cards would you recommend if I want to play at 1900x1200 with max detail.

My current setup is as follows.

Core 2 cpu

4 gigs XMS ddr2 ram

7800gt 256 by evga

23inch sony lcd

I also have the Tai Chin case with built in liquid cooling and a 650watt Tough power Power supply.

Any info would be much appreciated, I am playing on ordering 2 new cards tonight. Thanks again
September 10, 2006 7:43:50 PM

For that resolution a 7800GT isnt going to cut it in decent detail settings.

I'd either go for a 7950GX2, or an x1900XT and an x1900 Crossfire edition.

There is no point in the x1900XTX in crossfire as the x1900 crossfire master is only XT speeds.

The ATi config would probably give better performance most of the time, but the nVidia config can have a second card added for Quad SLi at a later date. The price premium (and current almost non-existant availibility) of the x1950XTX is not really worth the extra imho, but there is always that option. The x1950 crossfire card is also XTX speeds.

It also depends on what games you play, if you play anything OpenGL, you should probably stick with nVidia. If you use linux, you should probably stick with nVidia, if you only want Direct3D performance, ATi is king.

City of Villains, for example, is an OpenGL utterly dominated by nVidia, and its not by a slight margin.
September 10, 2006 7:48:33 PM

I was kinda hoping I didn't have to go the quad sli route.

How would the 7900gtx's preform if I got 2 of them and set them up in sli?

Reading the benchmarks on this site the quads were out performed by the sli 7900gtx's were they not?

Another thing is I currenty have the p4 Intel Pentium 4 650 Prescott 3.4GHz LGA 775 I was thinking about uggrading it to a better cpu what do you recommend I upgrade to if I am going for mostly gaming?
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September 10, 2006 8:35:18 PM

A Geforce 7950GX2 should be enough for 1920x1200 on most, if not all titles.
September 10, 2006 9:31:14 PM

m not a fanboy of nvidia but d thing is they r in sum way or d other hand in hand wid d developers......so at this time id prefer geforce 7900gt in sli..
cheers
September 10, 2006 10:43:44 PM

Quote:
I was kinda hoping I didn't have to go the quad sli route.

Its expensive, but if you decide you want to run everything in x8 FSAA etc, it could be worth it. 7950GX2s are not much (if any) more than x1950XTXs either.

Quote:
How would the 7900gtx's preform if I got 2 of them and set them up in sli?

You'd be fine for almost anything pretty much maxed, probably not oblivion tho.

Bear in mind that two of them is basically a far more expensive 7950GX2 single card clocked a bit higher, it would be much cheaper to get a single 7950GX2, and see how far that takes you. If you want to water cool however the 7950GX2 could be awkward.

7900GTX SLi = (650/1600)*2, 7950GX2 can be (570/1400)*2 stock if you get one of the XFX ones, and the cost of a 7950GX2 is not *much* more than a 7900GTX. To be honest the 7900GTX is overpriced, and I'd go for an eVga 7900GT KO at 580/1580 for much less cash if I were you.

Quote:
Reading the benchmarks on this site the quads were out performed by the sli 7900gtx's were they not?

Quad SLi is very new which is why I didnt suggest two 7950s straight off. The drivers used then were not exactly optimal

Quote:
Another thing is I currenty have the p4 Intel Pentium 4 650 Prescott 3.4GHz LGA 775 I was thinking about uggrading it to a better cpu what do you recommend I upgrade to if I am going for mostly gaming?


Your original post said you had a Core 2 :p  it depends on your motherboard, but if it supports Core 2, an e6600 and a single 7950GX2 would probably be about the same cost as two 7900GTXs....
September 10, 2006 10:47:34 PM

Quote:
are you sure that opengl advantage even exists now. i am pretty sure with the last few driver updates it has been reduced to non existent.


ATi has optimised well for the Doom3 engine. Other openGL games are still hamstrung on ATi cards. City of Villains is a game I play and therefore one I mentioned, and a single 7900GT will beat an x1900XT by 50% there easily, which is amazing considering the x1900XT is generally the better card.

Not saying the ATi is a bad card, but ATi have always gone for the Direct3D mass market.
September 10, 2006 10:52:05 PM

Quote:
I was kinda hoping I didn't have to go the quad sli route.

Its expensive, but if you decide you want to run everything in x8 FSAA etc, it could be worth it. 7950GX2s are not much (if any) more than x1950XTXs either.

Quote:
How would the 7900gtx's preform if I got 2 of them and set them up in sli?

You'd be fine for almost anything pretty much maxed, probably not oblivion tho.

Bear in mind that two of them is basically a far more expensive 7950GX2 single card clocked a bit higher, it would be much cheaper to get a single 7950GX2, and see how far that takes you. If you want to water cool however the 7950GX2 could be awkward.

7900GTX SLi = (650/1600)*2, 7950GX2 can be (570/1400)*2 stock if you get one of the XFX ones, and the cost of a 7950GX2 is not *much* more than a 7900GTX. To be honest the 7900GTX is overpriced, and I'd go for an eVga 7900GT KO at 580/1580 for much less cash if I were you.

Quote:
Reading the benchmarks on this site the quads were out performed by the sli 7900gtx's were they not?

Quad SLi is very new which is why I didnt suggest two 7950s straight off. The drivers used then were not exactly optimal

Quote:
Another thing is I currenty have the p4 Intel Pentium 4 650 Prescott 3.4GHz LGA 775 I was thinking about uggrading it to a better cpu what do you recommend I upgrade to if I am going for mostly gaming?


Depends on your motherboard, but if it supports Conroe, an e6600 and a single 7950GX2 would probably be about the same cost as two 7900GTXs....

Alright, I went ahead an ordered 1 7950gx2 and the new core 2 6700 Conroe I am hoping that with this setup I won't have any fps problems like I was before, I'd like to even be able to run fraps while im fighting without the slowdown that it usually has on my pc.

Your right about the price if I get 1 card for the price of two with the 7950gx2 I was just wondering now since its two cards in one, stacked on top of each other does that still not have the same effect as having two cards sli since now you are pushing everything through one pci slot instead of two. thanks again.

I am pretty much going for a rig that can run Oblivion the best thats possible at this time.
September 10, 2006 11:03:09 PM

yeah its basicly sli only not. It will give you the performance of 2 7900gt's in sli with an extra 512 video ram
September 10, 2006 11:03:24 PM

*Most* SLI motherboards run in x8 mode on both slots with SLI enabled.

The 7950GX2 slots into a PCI-Ex16 slot, and therefor has the same bandwidth as this.

The thing is, PCI-Ex16 is waaay more bandwidth than any single card needs anyway. The performance difference between PCI-Ex8 and x16 is around 2-3%

Your 7950GX2 basically is two 7900GTs in SLI, on one card, that can run on any motherboard alone, or have another two with them on SLi motherboards.

And if you mean using FRAPs for recording, then that probably will still be slow. If you are playing at 1900x1200 and recording at 15FPS full frame, you are trying to save 130MB of video data PER SECOND. Unless you have 4 Raptors or 10k+ RPM SCSI drives in a RAID0 array, your hard disk cant keep up.

Even saving at half frame mode in FRAPs is still 65MB/sec, which is still a hell of alot!
September 10, 2006 11:16:12 PM

Well yes I have 2 10k rpm raptor drives set up in a raid 0.

The thing is it slows down my fps alot however thats secondary, Hopefully with this new setup everything will run nice and smooth thats all I want ;0.

Also When do you think it would be worth it to add a second 9750gx2, should I wait for some better drivers to come out. Would I even see a difference if I slapped another one in while playing say Oblivion would it make a difference yet.

I figure going with the one 9750gx2 for now is good because it leaves me the ablity to upgrade in the future.

However im sure going from my setup now 1 7800gt to 1 9750gx2 is about 4x the processer power plus a new cpu.

Anyway thanks for breaking down how the two sli cards work compared to 1 card on a 16x slot. I was unaware that sli knocked it down to 8x each.
September 10, 2006 11:17:44 PM

One last thing this is the new board I ordered.

ASUS P5N32-SLI SE Deluxe Socket T (LGA 775) NVIDIA nForce4 SLI X16 ATX Intel Motherboard - Retail

Now I know they don't offically support quad sli but im hoping there will be a driver in the future that will.
September 10, 2006 11:56:26 PM

Quote:
are you sure that opengl advantage even exists now. i am pretty sure with the last few driver updates it has been reduced to non existent.


ATi has optimised well for the Doom3 engine. Other openGL games are still hamstrung on ATi cards. City of Villains is a game I play and therefore one I mentioned, and a single 7900GT will beat an x1900XT by 50% there easily, which is amazing considering the x1900XT is generally the better card.

Not saying the ATi is a bad card, but ATi have always gone for the Direct3D mass market.

not questioning you or anything but could you link me a benchmark of that. i am curious to see a test for it as i can't find one. probably just not looking hard enough.

The only one I can find is Here.

CoV/CoH isnt exactly a popular game for benchmarking etc, and that is actually a PhysX benchmark, but you can see from the graph at the top of that page that the 7900GTX is behaving in a CPU limited manner with the FPS hardly changing with resolution, while the x1900XTX drops to about half come 1600x1200. The other indicator that it is CPU limited with the 7900GTX is the fact that the difference in scores is much higher on the 7900GTX and about even through the resolutions - indicating a roughtly fixed performance increase from the PhysX offload. By the time the x1900XTX hits 1600x1200, it is almost completely GPU limited, and the extra CPU horsepower availible from the PPU doing the Physics is useless.

Quote:
One last thing this is the new board I ordered.

ASUS P5N32-SLI SE Deluxe Socket T (LGA 775) NVIDIA nForce4 SLI X16 ATX Intel Motherboard - Retail

Now I know they don't offically support quad sli but im hoping there will be a driver in the future that will.


Thats an nForce 4 board so it probably will run Quad SLi, if not now then eventually. However bear in mind that the nForce Intel chipsets are not the best partner for Conroe due to the limitation in overclocking.

An e6700 is the ultimate C2D imho, it seems to overclock just as well as the e6800 (probably why the e6800 is 75W rather than 65W, the parts could well come from the same bin and just be clocked differently), and it seems a waste to have an e6700 and NOT overclock it, in which case you really want a 975x board.

It is speculated that a future driver release will unlock SLi on Intel chipsets in light of the AMD/ATI merger, something I am waiting on myself!

Of course, if you dont want to overclock and want guaranteed compatibility, the nForce chipset board is the better choice.
September 12, 2006 3:48:59 AM

That 7950 GX2/E6700 combo is awesome. I have a friend that has a Alienware laptop that has dual 7900GS's in SLI and a single-core AMD Turion processor. He runs games at 1900x1200 and gets a smooth 35-40 fps in Oblivion (high settings...one setting below maximum) and also in WoW when there are a lot of players/actions on the screen (I've seen him play with FRAPS on). He gets smooth rates in CS:S as well. Your 7950 GX2 should do pretty well at 1900x1200.
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