AMD Radeon HD 6950 vs ATI Radeon HD 4860

VS

AMD Radeon HD 6950

ATI Radeon HD 4860

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6950 and 512MB VRAM Radeon HD 4860 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6950 's Advantages

Released 1 years and 3 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (160.0GB/s vs 96.00GB/s)

768 additional rendering cores

ATI Radeon HD 4860 's Advantages

Lower TDP (130W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 6950 +151%

2.253 TFLOPS

Radeon HD 4860

0.896 TFLOPS

Radeon HD 6950

VS

Radeon HD 4860

Graphics Card

Dec 2010

Release Date

Sep 2009

Northern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

750 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

160.0GB/s

Bandwidth

96.00GB/s

Render Config

22

Compute Units

8

-

1408

Shading Units

640

88

TMUs

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

11.20 GPixel/s

70.40 GTexel/s

Texture Rate

22.40 GTexel/s

-

2.253 TFLOPS

FP32 (float)

896.0 GFLOPS

563.2 GFLOPS

FP64 (double)

179.2 GFLOPS

Board Design

200W

TDP

130W

550 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Cayman

GPU Name

RV790

Cayman PRO (215-0807019)

GPU Variant

RV790 GT

TeraScale 3

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

2.64 billion

Transistors

0.959 billion

389 mm²

Die Size

282 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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