ATI Radeon HD 2900 PRO vs AMD Radeon HD 6870 1600SP Edition

VS

ATI Radeon HD 2900 PRO AMD Radeon HD 6870 1600SP Edition

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 PRO and 1024MB VRAM Radeon HD 6870 1600SP Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 1600SP Edition 's Advantages

Released 5 years and 1 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (134.4GB/s vs 51.20GB/s)

1280 additional rendering cores

Lower TDP (175W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 2900 PRO

0.384 TFLOPS

Radeon HD 6870 1600SP Edition +608%

2.72 TFLOPS

Radeon HD 2900 PRO

VS

Radeon HD 6870 1600SP Edition

Graphics Card

Dec 2007

Release Date

Jan 2013

Radeon R600

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

800 MHz

Memory Clock

1050 MHz

Memory

512MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

256bit

51.20GB/s

Bandwidth

134.4GB/s

Render Config

-

SM Count

-

4

Compute Units

20

320

Shading Units

1600

16

TMUs

80

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

L1 Cache

8 KB (per CU)

128 KB

L2 Cache

512 KB

Theoretical Performance

9.600 GPixel/s

Pixel Rate

27.20 GPixel/s

9.600 GTexel/s

Texture Rate

68.00 GTexel/s

-

FP16 (half)

-

384.0 GFLOPS

FP32 (float)

2.720 TFLOPS

-

FP64 (double)

544.0 GFLOPS

Graphics Processor

R600

GPU Name

Cypress

R600 PRO (215RGMDKA13FG)

GPU Variant

Cypress XT (215-0735033)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

80 nm

Process Size

40 nm

0.72 billion

Transistors

2.154 billion

420 mm²

Die Size

334 mm²

Board Design

200W

TDP

175W

550 W

Suggested PSU

450 W

2x DVI 1x S-Video

Outputs

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

1x 8-pin

Power Connectors

2x 6-pin

Graphics Features

10.0 (10_0)

DirectX

11.2 (11_0)

3.3 (full) 4.0 (partial)

OpenGL

4.4

N/A

OpenCL

1.2

N/A

Vulkan

N/A

-

CUDA

-

4.0

Shader Model

5.0

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