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 CrossfireX - 5750 & 5770
Not everyone can get a pair of matched cards, especially if you bought them seperate times. We quickly put a 5750 and a 5770 in CrossfireX just for the hell of it, and to give you some idea of what to expect you should you need to get a similar set going.
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Recently, I've reviewed two different cards from the 57xx line up; a reference 5770 1GB and the HIS HD 5750 IceQ+ 1GB (both cards supplied by HIS). This has given me the opportunity to test out something I've tried before on previous generations but not as yet seen first-hand with the new 5xxx series. CrossfireX. In this case, I'm going to be showing you some results from testing a 5750 and 5770 in CrossfireX formation.
I'm not going to go overboard with the tests as this is supposed to be a quick article, but I did want to show a little of what this mismatched set-up can do. It's entirely feasible that you may find yourself with either a single 5750 or 5770, and if you decide to go Crossfire you may not be able to get a matching card at the time, or perhaps a non-matching card might be on sale/a bargain/2nd hand. Hopefully, this article can give you an idea as to what to expect.
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The two cards we are going to be using are both supplied by HIS. The first is the HIS HD 5750 IceQ+ 1GB. This card runs at the standard 5750 clocks of 700MHz Core and 1100MHz (4600MHz) Memory. The second card is the HIS 5770 1GB, a reference model also running at standard clocks of 850MHz Core and 1200MHz (4800MHz) Memory.
Set up was utterly painless. You simply plug the cards into their respective PCIe slots, attach a CrossfireX Bridge to both cards, install the drivers and reboot. Upon reboot, the system detected the two cards, flashed the screen a couple of times and enabled CrossfireX before loading the desktop.
Testing
Test Setup: Intel Core 2 Duo 6420 @ 3.20GHz, 4GB of OCZ PC2-6400 Ram @ 960MHz, Asus Blitz Formula, Maxtor Diamondmax 10 7200 250GB HDD, Asetek Waterchill Watercooling, Hyper Type M 730w PSU. All latest drivers as of December 2009 (Catalyst 9.12) and the OS is Windows 7 64bit.
For comparison, we are using a reference Radeon HD 5770 card, the HIS HD 5750 IceQ+ 1GB and the HIS HD 4890 iCooler X4 1GB.
Software
Left 4 Dead 2 – Recording a custom demo on the Dead Center – Hotel level (inside in the inferno), we used FRAPS to record frame rates as we played back the demo on all cards at same settings.
Batman Arkham Asylum – We used a combination of the in game benchmark and FRAPS to gather our numbers for this game. All cards were set to the highest possible settings for that card.
Assassin's Creed – We headed for the nearest tower from the bureau roof in Acre and repeatedly climbed to the top. With 2 leaps of faith and a good look of the city from on high, we once again used FRAPS to record our frame rates. Settings for each card were set to highest possible for that card.
Crysis Warhead – We used the Framebuffer benchmark tool to run through the Ambush demo and recorded the results with FRAPS. Settings for each card were set to highest possible for that card.
Colin McRae DiRT2 – DiRT2 has some very good looking visuals and provides us with our first DirectX 11 test. We used FRAPS with the games inbuilt benchmark to test a quick run around a London track.
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