ATI Radeon HD 4650 vs AMD Radeon HD 6870

VS

We compared two Desktop platform GPUs: 256MB VRAM Radeon HD 4650 and 1024MB VRAM Radeon HD 6870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4650 's Advantages

Lower TDP (48W vs 151W)

AMD Radeon HD 6870 's Advantages

Released 2 years and 1 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (134.4GB/s vs 22.40GB/s)

800 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4650

0.384 TFLOPS

Radeon HD 6870 +425%

2.016 TFLOPS

Radeon HD 4650

VS

Radeon HD 6870

Graphics Card

Sep 2008

Release Date

Oct 2010

Radeon R700

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

700 MHz

Memory Clock

1050 MHz

Memory

256MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

22.40GB/s

Bandwidth

134.4GB/s

Render Config

-

SM Count

-

4

Compute Units

14

320

Shading Units

1120

32

TMUs

56

8

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

128 KB

L2 Cache

512 KB

Theoretical Performance

4.800 GPixel/s

Pixel Rate

28.80 GPixel/s

19.20 GTexel/s

Texture Rate

50.40 GTexel/s

-

FP16 (half)

-

384.0 GFLOPS

FP32 (float)

2.016 TFLOPS

-

FP64 (double)

-

Graphics Processor

RV730

GPU Name

Barts

RV730 PRO (215-0719056)

GPU Variant

Barts XT (215-0798000)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.514 billion

Transistors

1.7 billion

146 mm²

Die Size

255 mm²

Board Design

48W

TDP

151W

200 W

Suggested PSU

450 W

2x DVI 1x S-Video

Outputs

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

-

Power Connectors

2x 6-pin

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

-

CUDA

-

4.1

Shader Model

5.0

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