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Radeon 7950 vs 2x 7790 2gb Crossfire

post #1 of 8
Thread Starter 
Hello,
I'm looking to replace my ageing 5850 with some new kit, the price is near the same, and the scaling of the 7790 makes them near the same in performance, but would have 2x 2gb cards be better than the 3gb 7950 please?
post #2 of 8
No, you only have 2GB of memory usable, and scaling isn't always optimized for crossfire. You should always get the best single card you can afford, it allows you the option of later going cfx with better cards
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post #3 of 8
You should go with the single 3GB 7950. It's always better to go with the single, more powerful card rather than crossfire 2 mid range ones. 7950 is very rather cheap now. Or you might wanna wait for AMD 8xxx series if you can. Also you can save up for a 2nd 7950 and crossfire them, that would be awesome.

Cheers.
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post #4 of 8
Definitely go with the 7950 IMO. Not only will you not have to deal with any issues with crossfire, but you'll have a future upgrade path. Not only that, but you'll be able to sell off your card in the future to regain some of the money spent on it if you decide to upgrade again. I highly doubt you'd find anyone who would want to pay much if anything for used 7790's. Also, the 7950 is still a very good performer for current games.
post #5 of 8
All the above. Plus I can tell you right now that you won't notice much of a difference with the 7790 vs the 5850.

I have a second older rig running xfired 5770s. I tried replacing them with two 7770s and didn't notice any difference and the benchmarks weren't worth the money I spent compared to the older cards. I returned them and just kept the 5770s in it.

Now I notice a HUGE difference in my rig running xfired 7870s, especially after OC. Go with the single 7950.
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post #6 of 8
without a doubt get a HD 7950. HD 7950 is atleast 80 - 90% faster than HD 7790 at similar clocks. on average you can overclock HD 7950 to 1100 - 1150 mhz. as said above you will enjoy the consistency and smoothness of a single GPU. the extra 1GB VRAM is usefulf so you don't run out of VRAM in the upcoming next gen games at 1080p. CF scaling varies from game to game with few like Company of Heroes 2 not supporting CF at all. so no doubt. HD 7950 all the way thumb.gif

http://www.ebuyer.com/461928-radeon-hd-7950-3gb-gddr5-flex-pci-e-2xdvi-hdmi-2xm-dp-oc-11196-17-40g
http://www.ebuyer.com/451859-sapphire-technology-radeon-hd-7950-3gb-gddr5-vaporx-pci-e-2xdvi-11196-09-40g
www.amazon.co.uk/Gigabyte-7950-Radeon-Graphics-Card/dp/B0071LP5ME/

Gigabyte HD 7950 comes at 1 Ghz out of the box , but locked voltage. 3 yr warranty. sapphire HD 7950 flex runs at 925 mhz, vapor-x runs at 950 mhz. supports unlocked voltage. my vote is for flex. the dual x cooler is quieter and has better VRM cooling. sapphire has 2 yr warranty.
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post #7 of 8
7950
post #8 of 8
if you can get 7970 better. you can always crossfire with another 7970 again. Or if you can wait for next AMD gpu, wait. but newly GPU's are high prices initially.
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