AMD Radeon R9 285X vs AMD Radeon HD 7970
GPU Specs Compare
Graphics Card
Release Date
Unknown
Jan 2012
Generation
Volcanic Islands
Southern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1375 MHz
1375 MHz
Memory
Memory Size
3GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
384bit
Bandwidth
264.0GB/s
264.0GB/s
Render Config
Compute Units
32
32
Shading Units
2048
2048
TMUs
128
128
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
768 KB
768 KB
Theoretical Performance
Pixel Rate
32.06 GPixel/s
29.60 GPixel/s
Texture Rate
128.3 GTexel/s
118.4 GTexel/s
FP32 (float)
4.104 TFLOPS
3.789 TFLOPS
FP64 (double)
-
947.2 GFLOPS
Graphics Processor
GPU Name
Tonga
Tahiti
GPU Variant
Tonga XT(215-0851313)
Tahiti XT(215-0821060)
Architecture
GCN 3.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
5 billion
4.313 billion
Die Size
366 mm²
352 mm²
Board Design
TDP
200W
250W
Suggested PSU
550 W
600 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
1x 6-pin + 1x 8-pin
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 (12_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.0
2.1 (1.2)
Vulkan
1.2
1.2.170
Shader Model
6.3
6.5 (5.1)
📊 Benchmark
3DMark Time Spy
-
2,310
3DMark Time Spy Extreme
-
1,209