4870x2 crossfirex full#

The Radeon HD 4870 X2, however, is not so easily appeased, and ATI has stated that a PSU rated for a whopping 1000W is needed for two HD 4870 X2 cards to work in tandem.įrom our graphs, we can clearly see the monstrous power requirements of the Radeon HD 4870 X2 CrossFireX pair. The Radeon HD 5870 has rather modest power requirements, comparable to that of other high-end cards, and so a PSU rated for 600W would suffice for a two-way CrossFireX configuration. Power requirement is another crucial aspect that users should not overlook. The Radeon HD 5870 fared better, clocking a lower 80 degrees Celsius temperature per core.

4870x2 crossfirex full#

Of course, we always conduct temperature testing when our office air-con is in full force and the temperatures have stabilized, but the above are just our notes to relate to you on how picky such multi-GPU setups can be if ventilation and temperature is poor.Īccording to GPU-Z, the pair of Radeon HD 4870 X2 cards recorded a staggering 90 degrees Celsius on both cards, and it certainly felt like it. So many a times, we just waited till the air-con kicked in when official work hours begins.

It certainly seemed as if the heat was too much to take, causing it to hang a couple of times. The Radeon HD 4870 X2 especially, were incredibly hot to touch, and the despite the cooling efforts of the Storm Sniper casing. During our tests, the systems hung quite frequently in the early morning when air-conditioning in our offices wasn't yet turned on and our labs were still warm and stuffy. One of the biggest concerns with running multi-GPU configurations is the heat they produced, and it is indeed something a user should look into. Temperature & Power Consumption Temperature