AMD Radeon R9 390X, 390: testing models XFX and Sapphire

Concurrent with the launch of Radeon R9 and R9 X Fury Fury, the chip meets the sweet name of Fiji, AMD launched its new Radeon series 300. Thus, on the high end appeared the Radeon R9 390 and Radeon R9 390X, references which respectively replace the Radeon R9 290 and Radeon R9 290x outputs in 2013 … already!

At the heart of these new standards, there is no question of new graphics chip. It is indeed, and we do not do languish advantage for AMD to do something new in its range by renaming the existing. A well-known practice in the world of graphics card and not necessarily appreciated. For this series 300 and specifically for Radeon R9 390X and Radeon R9 390, AMD doubles the amount of video memory that will be the most outstanding innovation to offer 8 GB.

The question is whether this renaming was accompanied by a rise in performance of the cards! It is to answer this question we test the Radeon R9 390 Nitro and Sapphire Radeon R9 390X of XFX, two graphics cards launched recently and enjoying a clean design for each manufacturer.

Hawaii v1.1

We wrote in the introduction, it is a graphics chip Hawaii that we find on the Radeon R9 390X and R9 390. So this is the same chip that already equips the Radeon R9 290 / 290x. The configuration of the latter does not change one iota: 2816 computer units with 176 texture units and 64 ROP units for Radeon R9 390X. The configuration of the chip Radeon R9 390 should be satisfied with 2560 processing units, 160 texture units and 64 ROP units, the names of these units in charge of operations on our last pixels. Added to this is in both cases a 512-bit GDDR5 memory bus type.

If the configuration of the chip does not move an inch, and it remains also engraved in 28 nm, the amount of video memory that accompanies progressing well both Radeon R9 390 on Radeon R9 390X. We spend so 4 GB to 8 GB of GDDR5 video memory. A surprising choice of course or detonating when the Radeon R9 Fury X, a new standard of high-end AMD, must be content with 4 GB for the reasons we mentioned in our test and the Fury X relating to employment HBM memory.

Radeon R9 390X seen by the AMD Catalyst drivers

Doubling, welcome to the amount of video memory, AMD revises the operating frequencies on the rise. The Radeon R9 390 chip increases from 947 MHz to 1000 MHz while the memory advantage of a more significant increase of 1250 MHz to 1500 MHz. For its part, the Radeon R9 390X mouline at 1050 MHz (1000 MHz for the 290x R9) with a memory also at 1500 MHz.

Radeon R9 290

Radeon R9 290x

Radeon R9 390

Radeon R9 390X

GeForce GTX 980

GeForce GTX 980 Ti

Radeon R9 Fury

Interface

PCI-Ex. 16x – Gen3

PCI-Ex. 16x – Gen3

PCI-Ex. 16x – Gen3

PCI-Ex. 16x – Gen3

PCI-Ex. 16x – Gen3

PCI-Ex. 16x – Gen3

PCI-Ex. 16x – Gen3

Engraving

0.028 μ

0.028 μ

0.028 μ

0.028 μ

0.028 μ

0.028 μ

0.028 μ

transistors

6.2 billion

6.2 billion

6.2 billion

6.2 billion

5.2 billion

8000000000

8.9 billion

T & L

DirectX 12

DirectX 12

DirectX 12

DirectX 12

DirectX 12

DirectX 12

DirectX 12

Stream Processors

2560

2816

2560

2816

2048

2816

3584

ROP units

64

64

64

64

64

96

64

Units of texture

160

176

160

176

128

176

224

embedded memory

4096 MB

4096 MB

8192 MB

8192 MB

4096 MB

6144 MB

4096 MB

memory interface

512 bits

512 bits

512 bits

512 bits

256-bit

384 bits

4096 bits

Bandwidth

320 GB / s

320 GB / s

384 GB / s

384 GB / s

224 GB / s

336.5 GB / s

512 GB / s

GPU frequency

947 MHz

1000 MHz

1000 MHz

1050 MHz

1126 MHz (base)

1000 MHz (base)

1000 MHz (base)

Stream Processors frequency

947 MHz

1000 MHz

1000 MHz

1050 MHz

1126 MHz (base)

1000 MHz (base)

1000 MHz (base)

memory frequency

1250 MHz (GDDR5)

1500 MHz (GDDR5)

1500 MHz (GDDR5)

1500 MHz (GDDR5)

1750 MHz (GDDR5)

1750 MHz (GDDR5)

500 MHz – HBM