AMD Radeon HD 6870 X2 vs AMD Radeon HD 7950 Monica BIOS 2

VS

AMD Radeon HD 6870 X2 AMD Radeon HD 7950 Monica BIOS 2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 and 3GB VRAM Radeon HD 7950 Monica BIOS 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 X2 's Advantages

352 additional rendering cores

AMD Radeon HD 7950 Monica BIOS 2 's Advantages

Released 6 months late

More VRAM (3GB vs 1GB)

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

Lower TDP (85W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 X2 +64%

2.016 TFLOPS

Radeon HD 7950 Monica BIOS 2

1.229 TFLOPS

Radeon HD 6870 X2

VS

Radeon HD 7950 Monica BIOS 2

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

-

Base Clock

-

Boost Clock

-

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

-

SM Count

-

14

Compute Units

12

1120

Shading Units

768

56

TMUs

48

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

768 KB

Theoretical Performance

28.80 GPixel/s

Pixel Rate

25.60 GPixel/s

50.40 GTexel/s

Texture Rate

38.40 GTexel/s

-

FP16 (half)

-

2.016 TFLOPS

FP32 (float)

1229 GFLOPS

-

FP64 (double)

307.2 GFLOPS

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

Board Design

300W

TDP

85W

700 W

Suggested PSU

250 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 Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

CUDA

-

5.0

Shader Model

5.1

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