HIS Radeon R9 390 &A; 380

Back when the Radeon R9 290X and R9 290 were free over a year and a half ago like a sho, the R9 290 was past far the best buy as it was priced all but 30% lower but was just 5% slower. Today the HIS R9 290 iPower IceQ X² OC 4GB costs just $250 while the R9 290X is $300. With the former beingness more than 15% cheaper, the gap has union but the R9 290 remains the better value option.

It looks as though this trend leave be repeated with the R9 390 and R9 390X as the vanilla 390 should be priced 15% cheaper piece on paper it can't comprise more than 9% slower and will likely be similar to the 5% we proverb when comparing the R9 290X and R9 290.

In fact, while the R9 290X was clocked slightly higher than the R9 290 this isn't the case with the R9 390. Both the R9 390X and R9 390 feature the exact same core and memory frequencies with the only difference being the core configuration.

The R9 390 is armed with 2560 SPUs and 160 TAUs, 9% fewer than the 390X patc it features the same 64 ROPs. Compared to the original HD 7970, the R9 390 has 25% more SPUs and TAUs along with 100% more ROPs.

The HIS R9 390 IceQ X² OC 8GB features the exact same IceQ X² cooler ground on the 390X version we just looked at so we won't cristal into detail again. To boot, the card carries the duplicate PCIe power connector configuration and the same I/O jury connectivity which includes two DVI-D outputs on with just a single DisplayPort and HDMI output.

HIS Radeon R9 380

The R9 380 is a rehash of the R9 285 which agency it's based on the modish Graphics Core Next architecture. At its roots you testament find a graphics batting order that is virtually three age archaic forthwith (the HD 7950).

Like the HD 7950, R9 280 and R9 285 in front information technology, the R9 380 features 1792 SPUs, 112 TAUs and 32 ROPs, the exclusive real changes that impact functioning have been successful to the clock speeds.

For the R9 380 the clock speed has been set at 1000MHz, 9% faster than the R9 285, 21% higher than the R9 280 and 18% higher than the 7950. The GDDR5 memory frequency has been set at 1375MHz (5.5Gbps), the cookie-cutter frequency as the R9 285 which is higher than the 1250MHz (5.0Gbps) that the R9 280 and HD 7950 ran at.

However, when look its memory subsystem we find that the R9 380 has the same evaluative flaw As the R9 285: a 256-bit memory bus. In comparison, the R9 280 and 7950 both featured a wider 384-bit memory jitney and 3GB border buffer. The 256-bit wide memory substance the default option memory mental ability has as wel been downgraded to meet 2GB.

While the memory capacity shouldn't be make for alarm, the 27% diminution in obtainable memory bandwidth is. Although the memory is clocked 10% high on the R9 380, information technology's going to be much slower than the R9 280 when comparing bandwidth carrying into action.

Along the luminous side, due to its high core operating frequency, the R9 380 boasts higher fill rates and better work out performance. Still, if you were to overclock the R9 280 to match the R9 380 you should be rewarded with improved performance.

Again we find the IceQ X² cooler engaged, though the design is different than the implementation of the bigger R9 390X and 390 cards. This time the cooler uses a pair of slightly little 86mm two-fold axial fans which are connected directly to the heatsink.

The heatink measures 200 x 80 x 30mm and features a massive 115 x 94mm copper base. Connected to that base are fin 6mm heatpipes, which are studied to speedily extract heat from the copper base and move IT through the overlarge array of fins.

To run over the card enough juice HIS includes dual 6-immobilise PCI Express power connectors, which is the same configuration used by the AMD credit card. This is the same setup used by the R9 270X and R9 280 for example.