Advice on graphics card upgrade

[Ivanlabrie]

It will handle two alright...It's an old hx620 version, right?

[LoWRiDeR]

It is 4-5yo I think...I'm also tempted to go straight for two gigabyte gtx660ti 3gb windforce...aaaargh choices choices...

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[Hell Hound]

Hang on for a little @ least try, GTX 780 3gb should be cheaper than SLI TI's.

[davidkozat]

Nothing But TITAN!! NOW! LOL! You wont have to update ever again for years... at whatever resolutions...

[LoWRiDeR]

Question, if I bought an ASUS GTX680 DIRECTCU 4GB, and an ASUS GTX680 DIRECTCU 2GB to SLI them - would that make sense/work?

[davidkozat]

well it will work but why would you use 2 different amounts of memories on GPUs?

[LoWRiDeR]

Cause in sli only the ram of the main card is used...so it would be cheaper to get a card with 2gb as secondary.

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[davidkozat]

Really? I always thought, it used 2 Gpus ram.... well in that case get the 2GB then.

[Ivanlabrie]

Cause in sli only the ram of the main card is used...so it would be cheaper to get a card with 2gb as secondary.

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I'm not sure how that would work, but I doubt it'll still use 4gb, you need to mirror the data in both cards vram...so to get 4gb usable you'd need 8gb between both (?)

[davidkozat]

I'm not sure how that would work, but I doubt it'll still use 4gb, you need to mirror the data in both cards vram...so to get 4gb usable you'd need 8gb between both (?)

Makes sense :/

[LoWRiDeR]

I see...clear now. Pity the second card's ram is unusable

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[Ivanlabrie]

You'd see that setup more often if it was doable, don't you think? I've NEVER seen a guy run sli 680s with dissimilar ram size.

[LoWRiDeR]

Understood.cool.same ram then

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[LoWRiDeR]

Damn the more I read the more undecided I get....I thought to go for the Gigabyte HD7950 3GB...but then I read that it has latency issues and the 660Ti actually delivers better performance!!AAARGH!
I was thinking of getting 2xHD7950 as they are cheap and it seems the power they draw should be handled ok by my PSU....then I ready about the latency issue....any opinions?