The card
As noted earlier, the Sapphire Vapor-X R9 280X OC Edition graphics card
features Sapphires quite famous Tri-X cooler with a total of five heatpipes,
three 8mm and two 6mm ones. Vapor chamber is a technology Sapphire's using
since 2009 on their high-end products and lately the company decided to combine
it with a great number of heatpipes. This mix allows not only for low GPU but
also for very low temperatures on the voltage regulation modules as well as on
the memory. In order to move heat away from the large fin stack, there is the so
called Tri-X fan array, which consists of three fans, each measuring 100
millimeter in diameter. The Tri-X cooler is definitely one of the most
sophisticated models available and we would wish a similar cooler was available
as an upgrade compatible with reference cards. As part of the Vapor-X series, the Tri-X R9 280X OC Edition
uses black on blue color scheme and the overall build quality of the cooler is
very good. Having a closer look at the top edge of the card we find the Vapor-X
writing which acts as a load indicator. Depending on the load the backlight
changes color.
The Sapphire Vapor-X 280X OC Edition graphics card, or to be precise our sample of
it, allowed a maximum stable overclock of 1'180 MHz
for the GPU and 1'750 MHz on the memory side. We used Furemark V1.11.0 Geeks3D
benchmark with 15 minutes duration. With these clocks we had to feed the GPU
with 1.20 Volts and the memory ran at stock voltages. Sapphire is locking the
BIOS to 1.20 volts maximum. We would like some more headroom with this card,
since the powerdesign could cope with higher loads easily and the card could
also be overclocked quite a bit higher.
For its Vapor-X R9 280X OC Edition, Sapphire makes use of an entire custom design PCB. The PCB
color is black and features an improved power design. There is a total of 7+2+1 (GPU, Memory
and PLL, PCIe) phases for the
Vapor-X card versus 5+2+1 for the reference 280X card. GPU, memory and VRM
are all cooled using the vapor chamber.
Checking the voltage regulation chip we find a digital multi-phase controller
IORL 3567B from International Rectifier that is taking care of both GPU and
memory paired with IOR 3553M mosfets.
The memory chips used are made by SKhynix and carry the model number
H5GQ2H24AFR. They are specified to run at 1'500 MHz (6'000 MHz effective).