Today we will be looking at the ASUS Radeon Strix R7 370 4GB video card (Model: STRIX-R7370-DC2OC-4GD5-GAMING) and see how it performs compared to the XFX and MSI series of R7 370 cards that I reviewed earlier. I have been sticking with the 4 GB cards for the R7 series, as the price premium over their 2 GB brethren has narrowed to around $20, and as mentioned previously they will be more resistant to DAG file size increases. They should also hold a slightly higher resale value than their 2 GB counterparts.
The R7 370 line has proved to be a solid choice when considering the price/performance ratio in terms of mining while taking into account the mining revenue per watt consumed. It also has a slightly less acquisition cost than some of its bigger brothers who may hash at a higher speed but also consume more electricity in doing so. I have been able to scoop up the 4 GB versions of R7 370 series for around $150 if I catch them on-sale.
The Asus cards I am looking at today came in at $149.45 each, shipped, with the sale price and an extra $10 promotion (per card) that NewEgg was offering. Unfortunately the limit on this offer was 2 cards, but I still jumped at the chance to add a couple of more cards to the test-bench and eventually add them to the mining farm.
Concerning the hash performance, the R7 370 series have been getting around 15 Mhash/s per card and only drawing around 120 watts each, yielding a watt/hash ratio of around 9 w/Mhash, meaning around 9 watts are consumed per every 1 Mhash/sec. I should point out that these figures are derived with the card(s) in a mining rig, so a prorated portion of the motherboard/CPU/PS electrical overhead is also included in this figure. For instance, if a mining rig has 5 GPUs, 1/5th of the overhead is apportioned to each card. I feel this is a fair method, as looking only at the video cards contribution in isolation would overlook the power draw of these other essential components when mining.
The Asus R7 370 Strix graphic card requires a single 6 pin PCIe power connector to provide power to the board. It is rated as having a 150 watt power draw. With dual cooling fans and a claimed 30% cooler and 3x quieter operation, the one connector is plenty to provide the electrical needs as the fans will not need to run at full speed.
The Asus R7 370 Strix comes with the core clock set at 1050 MHz, its 4 GB (256-bit) of GDDR5 memory is clocked at 1400 MHz for an effective rate of 5600 MHz.
DirectCU II Cooling Technology
30% Cooler and 3X Quieter Performance
Exclusive DirectCU II cooling technology outperforms reference designs that transports 40% more heat away from the GPU — a first for the industry! The design also includes 2.3X-larger heat-dissipation: this means performance that’s 30% cooler three-times (3X) quieter than reference for ultra-stable hardcore gaming with very low noise.
Wing-Blade 0dB Fan Design
Max Air Flow with 105% More Air Pressure
0dB fans engineered with a patented, new wing-blade design that delivers maximum air flow and improved 105% static pressure over the heat sink, while operating at 3X quieter volumes than reference cards. The 0dB fans also let you enjoy games like League of Legends® and StarCraft® in complete silence — because the fan stops completely when the GPU temperature remains below a set level*. This makes DirectCU II the coolest and quietest graphics card in the market.
On the next page we will look at setting up the Asus Strix R7 370 cards in a mining rig.