AMD Radeon HD 6870 vs ATI FirePro V7900

VS

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 2GB VRAM FirePro V7900 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI FirePro V7900 's Advantages

Released 7 months late

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (160.0GB/s vs 134.4GB/s)

160 additional rendering cores

Lower TDP (150W vs 151W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 +8%

2.016 TFLOPS

FirePro V7900

1.856 TFLOPS

Radeon HD 6870

VS

FirePro V7900

Graphics Card

Oct 2010

Release Date

May 2011

Northern Islands

Generation

FirePro

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1050 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

160.0GB/s

Render Config

-

SM Count

-

14

Compute Units

20

1120

Shading Units

1280

56

TMUs

80

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

Theoretical Performance

28.80 GPixel/s

Pixel Rate

23.20 GPixel/s

50.40 GTexel/s

Texture Rate

58.00 GTexel/s

-

FP16 (half)

-

2.016 TFLOPS

FP32 (float)

1.856 TFLOPS

-

FP64 (double)

464.0 GFLOPS

Graphics Processor

Barts

GPU Name

Cayman

Barts XT (215-0798000)

GPU Variant

Cayman PRO GL

TeraScale 2

Architecture

TeraScale 3

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.7 billion

Transistors

2.64 billion

255 mm²

Die Size

389 mm²

Board Design

151W

TDP

150W

450 W

Suggested PSU

450 W

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

Outputs

4x DisplayPort 1.2

2x 6-pin

Power Connectors

1x 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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