AMD Radeon HD 6850 X2 vs ATI Radeon HD 4650 AGP

VS

AMD Radeon HD 6850 X2 ATI Radeon HD 4650 AGP

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6850 X2 and 512MB VRAM Radeon HD 4650 AGP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6850 X2 's Advantages

Released 3 years late

Larger VRAM bandwidth (134.4GB/s vs 12.80GB/s)

640 additional rendering cores

ATI Radeon HD 4650 AGP 's Advantages

Lower TDP (48W vs 254W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 X2 +300%

1.536 TFLOPS

Radeon HD 4650 AGP

0.384 TFLOPS

Radeon HD 6850 X2

VS

Radeon HD 4650 AGP

Graphics Card

Sep 2011

Release Date

Sep 2008

Northern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

AGP 8x

Clock Speeds

-

Base Clock

-

Boost Clock

-

1050 MHz

Memory Clock

400 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

12.80GB/s

Render Config

-

SM Count

-

12

Compute Units

4

960

Shading Units

320

48

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

38.40 GTexel/s

Texture Rate

19.20 GTexel/s

-

FP16 (half)

-

1.536 TFLOPS

FP32 (float)

384.0 GFLOPS

-

FP64 (double)

-

Graphics Processor

Barts

GPU Name

RV730

Barts PRO (215-0798006)

GPU Variant

RV730 PRO (215-0719056)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.7 billion

Transistors

0.514 billion

255 mm²

Die Size

146 mm²

Board Design

254W

TDP

48W

600 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 8-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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