AMD Radeon HD 6870 X2 vs AMD Radeon HD 7950 Monica BIOS 1

VS

AMD Radeon HD 6870 X2

AMD Radeon HD 7950 Monica BIOS 1

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 and 3GB VRAM Radeon HD 7950 Monica BIOS 1 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950 Monica BIOS 1 's Advantages

Released 6 months late

More VRAM (3GB vs 1024GB)

Larger VRAM bandwidth (240.0GB/s vs 134.4GB/s)

416 additional rendering cores

Lower TDP (185W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 X2

2.016 TFLOPS

Radeon HD 7950 Monica BIOS 1 +40%

2.842 TFLOPS

Radeon HD 6870 X2

VS

Radeon HD 7950 Monica BIOS 1

Graphics Card

Jul 2011

Release Date

Jan 2012

Northern Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

134.4GB/s

Bandwidth

240.0GB/s

Render Config

14

Compute Units

24

-

1120

Shading Units

1536

56

TMUs

96

32

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

768 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

29.60 GPixel/s

50.40 GTexel/s

Texture Rate

88.80 GTexel/s

-

2.016 TFLOPS

FP32 (float)

2.842 TFLOPS

-

FP64 (double)

710.4 GFLOPS

Board Design

300W

TDP

185W

700 W

Suggested PSU

450 W

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

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

-

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Barts

GPU Name

Tahiti

Barts XT (215-0798000)

GPU Variant

Tahiti PRO (215-0821056)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

4.313 billion

255 mm²

Die Size

352 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

5.0

Shader Model

5.1

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