AMD Radeon HD 6950 vs ATI Radeon HD 4650

VS

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6950 and 256MB VRAM Radeon HD 4650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6950 's Advantages

Released 2 years and 3 months late

Larger VRAM bandwidth (160.0GB/s vs 22.40GB/s)

1088 additional rendering cores

ATI Radeon HD 4650 's Advantages

Lower TDP (48W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 6950 +486%

2.253 TFLOPS

Radeon HD 4650

0.384 TFLOPS

Radeon HD 6950

VS

Radeon HD 4650

Graphics Card

Dec 2010

Release Date

Sep 2008

Northern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1250 MHz

Memory Clock

700 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

22.40GB/s

Render Config

-

SM Count

-

22

Compute Units

4

1408

Shading Units

320

88

TMUs

32

ROPs

8

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

128 KB

Theoretical Performance

25.60 GPixel/s

Pixel Rate

4.800 GPixel/s

70.40 GTexel/s

Texture Rate

19.20 GTexel/s

-

FP16 (half)

-

2.253 TFLOPS

FP32 (float)

384.0 GFLOPS

563.2 GFLOPS

FP64 (double)

-

Graphics Processor

Cayman

GPU Name

RV730

Cayman PRO (215-0807019)

GPU Variant

RV730 PRO (215-0719056)

TeraScale 3

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

2.64 billion

Transistors

0.514 billion

389 mm²

Die Size

146 mm²

Board Design

200W

TDP

48W

550 W

Suggested PSU

200 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

-

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

-

CUDA

-

5.0

Shader Model

4.1

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