Home GPU Comparison AMD Radeon R9 285 vs AMD Radeon HD 6970

AMD Radeon R9 285 vs AMD Radeon HD 6970

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 285 and 2GB VRAM Radeon HD 6970 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 285 's Advantages
Released 3 years and 9 months late
256 additional rendering cores
Lower TDP (190W vs 250W)

Score

Benchmark

FP32 (float)
Radeon R9 285 +21%
3.29 TFLOPS
Radeon HD 6970
2.703 TFLOPS
VS

Graphics Card

Sep 2014
Release Date
Dec 2010
Volcanic Islands
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

-
-
-
-
-
-
1375 MHz
Memory Clock
1375 MHz

Memory

2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
176.0GB/s
Bandwidth
176.0GB/s

Render Config

28
Compute Units
24
-
-
-
1792
Shading Units
1536
112
TMUs
96
32
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
512 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

29.38 GPixel/s
Pixel Rate
28.16 GPixel/s
102.8 GTexel/s
Texture Rate
84.48 GTexel/s
3.290 TFLOPS
FP16 (half)
-
3.290 TFLOPS
FP32 (float)
2.703 TFLOPS
205.6 GFLOPS
FP64 (double)
675.8 GFLOPS

Board Design

190W
TDP
250W
450 W
Suggested PSU
600 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
2x 6-pin
Power Connectors
1x 6-pin + 1x 8-pin

Graphics Processor

Tonga
GPU Name
Cayman
Tonga PRO (215-0851128)
GPU Variant
Cayman XT (215-0807007)
GCN 3.0
Architecture
TeraScale 3
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
5 billion
Transistors
2.64 billion
366 mm²
Die Size
389 mm²

Graphics Features

12 (12_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.1
OpenCL
1.2
1.2.170
Vulkan
N/A
-
-
-
6.5
Shader Model
5.0

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