hello iam new hear tried every where else for answers i have an msi 7950 oc/v2 i want to do crossfire. i ordered another msii7950 oc/v2 from a well know shop in uk it has now been 43 days since i ordered it still cant give me an eta. so was thinking of getting a different 7950. i was looking at the msi 7950 oc/be but have seen a lot of problems with them in the forums and also been informed that the boost on the newer version would more than likely interfear and give more microstutter. was looking at the Asus DirectCU II TOP Radeon HD 7950 AMD Graphics Card - 3GB as this is at 900mhz. as i understand mixing cards is ok ? or should i just wait for the shop to get the v2 back in stock. or can anyone else suggest a card that would be best suited thanks
Actually, you can crossfire any 7950 or even 7970 card. You just need to match the first two digits, 79X0 with another 79X0. You also can crossfire a 7850 and a 7870 etc. Of course you cannot CF a 7870 & 7970, the first two digits must match.
You can crossfire as long as the chip is the same, so your 7950 can crossfire with a 7870 LE, 7950, 7950 boost, 7970, or 7970 ghz because they all share the same GPU.
You will probably notice the fewest problems if you got another 7950. I would be less concerned about clock rates than I would be about varying number of shader cores, as clock rates are easily adjusted (either up on the slower card, or down on the faster card) if you notice a lot of microstutter.
Regardless, microstutter is blown way out of proportion by people who play beyond their cards' limits and wonder why they get microstutter at 30 fps. Adjust your settings to keep your fps sufficiently high and you won't notice it, especially if your minimum is over your monitors refresh rate.
Cheers for the help I have ordered the Asus gpu. Iam running 3 x24 " monitors on eyefinity.people have had problems with second card going in to power save.will I have this problem if so how do you dissable the power save mode
If you're talking about the screen flickering in 2d mode with crossfire and more than one monitor, I solved it by raising the idle memory clock of the primary card. You have to create a custom profile, then edit a text file. Do an internet search for exact details.