Radeon 4850 + 4870 CF?

Forum Graphics & Displays : Graphics Cards Radeon 4850 + 4870 CF?

I currently have a radeon 4850, and my motherboard supports CF. I was going to get a 5770 and sell my 4850, but then I thought that I could buy a 4870 and CF with my 4850. What kind of performance would I get here? Possibly around a 5850? Thanks in advance.

PS. What power supply should I get if I need three 6pin power connecters (2 for 4870, 1 for 4850)? My budget is around 50-70$. Thanks.

Reply to devinkoz

when you CF those two it is more likely to have 4850 in CF performance because your current 4850 will hold back the 4870

Reply to renz496

What if I set the 4870 as the main GPU?

Message quoted 1 times

Reply to devinkoz

devinkoz wrote :

What if I set the 4870 as the main GPU?

wont make a difference. from what i've heard when mixing cards in crossfire, the more powerful card downclocks to match the weaker card

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Reply to jefe323

the outcome will be the same in term of performance

Reply to renz496

Aiight, thanks for the info. I might just side with the 5770 and sell my 4850. BTW, how does the 5770 overclock? I've heard it can clock like a champ, but i'm not sure. Could I get it close to 950ghz?

EDIT: 950MHZ not ghz Lmfao

Message quoted 1 times
Message edited by devinkoz on 07-30-2010 at 07:19:33 PM

Reply to devinkoz

I actually did this about a year or so ago and the 4870 scales down to the 4850 level, even down to the video card memory.

The 4870 = 1GB
The 4850 = 512Meg

the 4870 scaled to the level of a 4850 with 512 meg

If it helps, there was a decent gain in performance for me when i did this in most games.

Really Wish Nvidia allowed for different-model scaling like Crossfire does.

------------------------------ - ASUS Rampage Formula - Intel Core2Quad Q9650 @ 3.6GHz - MSI GTX 460 1GB - NZXT Phantom 410 white - Corsair TX750 - G.Skill 4GB DDR2-800 - WD Caviar Black 640 GB 32-meg cache - OCZ 30-GB SSD - Hyper 212+
Reply to jonpaul37

devinkoz wrote :

yes the card can OC well but you have to remember that every card have different OC capability even though the model is the same

Reply to renz496

Why not get another 4850 it will be a mile better than a single 5770 and they cost next to nothing

Reply to simon12

Another 4850? I doubt it. I look forward to CF 5770, and one 5770 will be much cooler and take up much less energy than 4850 CF... Correct me if I'm wrong.

Reply to devinkoz

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