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HIS 7950 IceQ X² Boost Clock 3GB (H795QMC3G2M)

The packaging of HIS 7950 IceQ Boost Clock 3 GB is designed in the same style as that of the senior model except for the product name and the lack of specific advantages of the original cooler over the reference one.

 

There’s a Boost Clock badge in the bottom right of the box, but its information disagrees with our monitoring data as well as with the product specs from the official website.

The packaging, accessories, country of origin and warranty are the same as with the HIS 7970 IceQ X² GHz Edition, but the HIS 7950 IceQ X² Boost Clock comes to retail at a cheaper price of $319.

The new HIS 7950 IceQ X² Boost Clock is indistinguishable from its senior cousin visually, having the same size, video interfaces and cooler.

The only difference we could find was the 6- and 8-pin power connectors instead of two 8-pin ones.

We can remind you that the reference Radeon HD 7950 has two 6-pin power connectors. The HIS version has the same power requirements as the reference card: a peak power draw of 200 watts and a 500-watt or better PSU.

The HIS 7950 IceQ X² Boost Clock is similar to the HIS 7970 IceQ X² GHz Edition in its PCB design except for certain elements which are not very easy to spot.

The card seems to use the same DirectFETs, solid-state capacitors and 6+1+1-phase power system with a CHiL CHL8228G controller:

The manufacturer’s official website talks about a 4+1+1 power system (GPU+memory+PLL), yet we are inclined to disagree.

There’s nothing unusual about the Tahiti Pro chip on the HIS 7950 IceQ X² Boost Clock. Its marking can be read from the metallic frame on the GPU:

The GPU has a base clock rate of 850 MHz but we never spotted this frequency during our tests. It was always 950 MHz (the so-called boost mode, hence the card’s Boost Clock designation). That’s quite impressive factory overclocking, by the way. The voltage is 1.25 volts in 3D mode and 0.806 volts in 2D mode. The GPU is clocked at 300 MHz in 2D applications.

The card is equipped with 3 gigabytes of GDDR5 memory in 12 Elpida memory chips located on the face side of the PCB:

Basing on our experience, we prefer Hynix to Elpida in terms of overclocking potential. HIS must have tried to cut the cost by installing the cheaper variant. Labeled W2032BBBG-50-F, the memory chips are rated for 5000 MHz. They are indeed clocked at that frequency, providing a peak bandwidth of 240 GB/s via a 384-bit bus.

 

 
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