ATI Radeon HD 4850 vs AMD Radeon HD 6870 X2

VS

ATI Radeon HD 4850

AMD Radeon HD 6870 X2

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4850 and 1024MB VRAM Radeon HD 6870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4850 's Advantages

Lower TDP (110W vs 300W)

AMD Radeon HD 6870 X2 's Advantages

Released 3 years and 1 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (134.4GB/s vs 63.55GB/s)

320 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4850

1 TFLOPS

Radeon HD 6870 X2 +101%

2.016 TFLOPS

Radeon HD 4850

VS

Radeon HD 6870 X2

Graphics Card

Jun 2008

Release Date

Jul 2011

Radeon R700

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

993 MHz

Memory Clock

1050 MHz

Memory

512MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

256bit

63.55GB/s

Bandwidth

134.4GB/s

Render Config

10

Compute Units

14

-

800

Shading Units

1120

40

TMUs

56

16

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

10.00 GPixel/s

Pixel Rate

28.80 GPixel/s

25.00 GTexel/s

Texture Rate

50.40 GTexel/s

-

1000 GFLOPS

FP32 (float)

2.016 TFLOPS

200.0 GFLOPS

FP64 (double)

-

Board Design

110W

TDP

300W

300 W

Suggested PSU

700 W

2x DVI 1x S-Video

Outputs

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

1x 6-pin

Power Connectors

-

Graphics Processor

RV770

GPU Name

Barts

RV770 PRO (215-0669065)

GPU Variant

Barts XT (215-0798000)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.956 billion

Transistors

1.7 billion

256 mm²

Die Size

255 mm²

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

-

4.1

Shader Model

5.0

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