It should be noted that the reference model original Radeon HD 7850 uses 2 GB of memory.This excellent video card offers 2GB of GDDR5 memory delivers a truly superb graphics rendering performance that can handle all your demanding games and high-resolution multimedia content. ASUS Radeon HD 7850 DirectCU (part number HD7850-DC-1GD5) is a desktop Graphics Processing Unit, based on AMD Radeon HD 7850, and manufactured on 28 nm technology. The GPU was released in March 2012. The card has 860 MHz graphics clock frequency. It also has 1024 stream processors, 64 texture units, and 32 color ROPs.Introduced new product is based on the graphic processor Pitcairn, which is produced at rates 28-nanometer manufacturing process, based on the architecture AMD Graphics CoreNext.
![]() If you have one of those inexpensive kill A Watt, you can get a rough idea on system power draw when pushing your card at higher clocks.Antec, like most other PSU "manufacturers" gets most if not all of its power supplies from OEMs. But by all means, give it a try if so inclined. The 7870 overclocked beats it at half the the voltage along with 2gb of memory over the 580s 1.5gb.I don't imagine you'd have too much luck achieving high overclocks on an HD 7870 with a 400W PSU, especially if you start raising voltages by any real margin. Overclocked i think the 7850 runs just as fast as the gtx580 at less then half the voltage. It can draw MORE than the 7870 in things like Furmark and OCCT but most benchmarks using game tests show it pulling 15-20W less than a 7870 from the wall.79xx = 230W peak (1x 8-pin + 1x 6-pin power)I hope the 7870, although the 7850 is also a fine choice and they both overclock great. Handheld gps ratings and reviewsI would agree with the sentiment that, in general, Antec PSUs are above average (including the OP's), but because they source them from different OEMs, you really need to take each one as they come.
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