Home GPU Comparison AMD Radeon HD 8970 OEM vs AMD Radeon HD 6790

AMD Radeon HD 8970 OEM vs AMD Radeon HD 6790

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8970 OEM and 1024MB VRAM Radeon HD 6790 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8970 OEM 's Advantages
Released 1 years and 9 months late
More VRAM (3GB vs 1024GB)
Larger VRAM bandwidth (264.0GB/s vs 134.4GB/s)
1248 additional rendering cores
AMD Radeon HD 6790 's Advantages
Lower TDP (150W vs 250W)

Score

Benchmark

FP32 (float)
Radeon HD 8970 OEM +181%
3.789 TFLOPS
Radeon HD 6790
1.344 TFLOPS
VS

Graphics Card

Jan 2013
Release Date
Apr 2011
Sea Islands
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

-
-
-
-
-
-
1375 MHz
Memory Clock
1050 MHz

Memory

3GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
256bit
264.0GB/s
Bandwidth
134.4GB/s

Render Config

32
Compute Units
10
-
-
-
2048
Shading Units
800
128
TMUs
40
32
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
768 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

29.60 GPixel/s
Pixel Rate
13.44 GPixel/s
118.4 GTexel/s
Texture Rate
33.60 GTexel/s
-
-
-
3.789 TFLOPS
FP32 (float)
1344 GFLOPS
947.2 GFLOPS
FP64 (double)
-

Board Design

250W
TDP
150W
600 W
Suggested PSU
450 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1
1x 6-pin + 1x 8-pin
Power Connectors
2x 6-pin

Graphics Processor

Tahiti
GPU Name
Barts
Tahiti XT (215-0821060)
GPU Variant
Barts LE (215-0798002)
GCN 1.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
4.313 billion
Transistors
1.7 billion
352 mm²
Die Size
255 mm²

Graphics Features

12 (11_1)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
1.2
OpenCL
1.2
1.2
Vulkan
N/A
-
-
-
5.1
Shader Model
5.0

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