AMD Radeon HD 6850 X2 vs AMD Radeon HD 6790

VS

AMD Radeon HD 6850 X2 AMD Radeon HD 6790

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6850 X2 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 6850 X2 's Advantages

More VRAM (2GB vs 1GB)

160 additional rendering cores

AMD Radeon HD 6790 's Advantages

Lower TDP (150W vs 254W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 X2 +14%

1.536 TFLOPS

Radeon HD 6790

1.344 TFLOPS

Radeon HD 6850 X2

VS

Radeon HD 6790

Graphics Card

Sep 2011

Release Date

Apr 2011

Northern Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1050 MHz

Memory Clock

1050 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

134.4GB/s

Render Config

-

SM Count

-

12

Compute Units

10

960

Shading Units

800

48

TMUs

40

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

Theoretical Performance

25.60 GPixel/s

Pixel Rate

13.44 GPixel/s

38.40 GTexel/s

Texture Rate

33.60 GTexel/s

-

FP16 (half)

-

1.536 TFLOPS

FP32 (float)

1344 GFLOPS

-

FP64 (double)

-

Graphics Processor

Barts

GPU Name

Barts

Barts PRO (215-0798006)

GPU Variant

Barts LE (215-0798002)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.7 billion

Transistors

1.7 billion

255 mm²

Die Size

255 mm²

Board Design

254W

TDP

150W

600 W

Suggested PSU

450 W

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

Outputs

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

2x 8-pin

Power Connectors

2x 6-pin

Graphics Features

11.2 (11_0)

DirectX

11.2 (11_0)

4.4

OpenGL

4.4

1.2

OpenCL

1.2

N/A

Vulkan

N/A

-

CUDA

-

5.0

Shader Model

5.0

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