HIS Radeon HD 7970 IceQ X2 Graphics Card Review



Product: HIS Radeon HD 7970 IceQ X2
Company: HIS
Author: James Prior
Editor: Charles Oliver
Date: January 16th, 2013

Overclocking, Power & Temps

Overclocking

HIS iTurbo Overclocking

Using the HIS iTurbo software we were able to overclock the card to 1245MHz at 1.281v on the engine and 1785MHz [7.14Gbps] at 1.575v on the memory. This is an increase of 24.5% over the base engine clock and 19% for the memory over the base 1500MHz. Below you can see the GPU-Z outputs for our reference Radeon HD 7970 GE and the HIS card, stock and overclocked.

AMD 7970 GE
HIS 7970 IceQ X2
HIS IceQ X2 OC

We measured power for the whole system using a Kill-a-Watt P3 meter, recording desktop idle, eyefinity desktop, gaming load and eyefinity gaming load. Our gaming load is of 3DMark 11 GPU test 4, run at extreme settings. The highest value seen is recorded. Idle is display blank, Eyefinity idle is no applications triple display desktop displayed.

Power

Temps

We use CPUID's HWMonitor to record GPU temperatures, below you can see the idle, eyefinity desktop and gaming load tempatures.

In CrossfireX the HIS card was always cooler than the reference design cooler, sometimes by as much as 15C. Noise is much improved over the banshee that is an AMD Radeon reference cooler under load and high fan speed, so much so that it is hard to quantify.

Re-running 3DMark11 shows that the overclock only makes a difference at high graphical settings and high resolution.

As the GPU workload increases, so does the benefit delivered by overclocking:

HIS IceQ X2 vs IceQ X2 OC
Entry +4%
Performance +10.5%
Extreme +16.5%