HIS 7850 IceQ Turbo X 2GB (H785QT2G2M)
We’ve got two identical HIS 7850 IceQ Turbo X cards for our tests. Designed like the boxes of the senior products from HIS, the packaging provides information about the graphics card and supported technologies.
The box contents are the same except for the graphics card proper. The HIS 7850 IceQ Turbo X costs $200, which is somewhat more expensive than regular Radeon HD 7850s, but the HIS version has a number of advantages we’ll tell you about right now.
The original cooler covers the face side of the PCB and goes out beyond its dimensions even.
The card is 297x140x44 mm large, but the last number refers to the thickness in its middle whereas the cooler’s fan housing is over 50 mm thick.
Therefore, the HIS 7850 IceQ Turbo X can only be used in a CrossFireX configuration with a gap of at least two expansion slots from the other graphics card. You should take this into account if you’re going to use it in a CrossFireX tandem.
Like every other Radeon HD 7850, the HIS 7850 IceQ Turbo X is equipped with one MIO connector for building CrossFireX configurations.
The manufacturer has tweaked the power system again, so the card is equipped with not one but two 6-pin power connectors. Its power draw is specified to be 150 watts. A 500-watt or better PSU is recommended for a computer with one HIS 7850 IceQ Turbo X inside.
Let’s take a look at its PCB now:
If you’ve seen some Radeon HD 7870 and HD 7850 cards, you may be able to identify that the HIS 7850 IceQ Turbo X uses the HD 7870’s 5+1+1-phase power system (GPU+memory+PLL) whereas the reference HD 7850 has one GPU power phase less. It also features high-quality DrMOS MOSFETs with improved service life.
The power system is managed by a CHiL Semiconductor CHL8225G controller.
The Pitcairn XT chip is 212 sq. mm large. It was manufactured in Taiwan on the 34th week of 2012.
The HIS 7850 IceQ Turbo X is pre-overclocked to a GPU frequency of 1000 MHz (+140 MHz or 16.3%). According to our monitoring tools, the GPU voltage is 1.075 and 0.806 volts in 3D and 2D mode, respectively. The clock rate is dropped to 300 MHz in 2D applications, too.
The card is equipped with the same Elpida W2032BBBG-50-F memory chips we’ve seen on the HIS 7950 IceQ X² Boost Clock:
Clocked at 4800 MHz, they provide a bandwidth of 153.6 GB/s via a 256-bit bus.