AMD Radeon HD 7850 vs AMD Radeon HD 6850

VS

AMD Radeon HD 7850

AMD Radeon HD 6850

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7850 and 1024MB VRAM Radeon HD 6850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7850 's Advantages

Released 1 years and 5 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (153.6GB/s vs 128.0GB/s)

64 additional rendering cores

AMD Radeon HD 6850 's Advantages

Lower TDP (127W vs 130W)

Score

Benchmark

FP32 (float)

Radeon HD 7850 +18%

1.761 TFLOPS

Radeon HD 6850

1.488 TFLOPS

Radeon HD 7850

VS

Radeon HD 6850

Graphics Card

Mar 2012

Release Date

Oct 2010

Southern Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

128.0GB/s

Render Config

16

Compute Units

12

-

1024

Shading Units

960

64

TMUs

48

32

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

27.52 GPixel/s

Pixel Rate

24.80 GPixel/s

55.04 GTexel/s

Texture Rate

37.20 GTexel/s

-

1.761 TFLOPS

FP32 (float)

1488 GFLOPS

110.1 GFLOPS

FP64 (double)

-

Board Design

130W

TDP

127W

300 W

Suggested PSU

300 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Pitcairn

GPU Name

Barts

Pitcairn PRO (215-0828062)

GPU Variant

Barts PRO (215-0798006)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

1.7 billion

212 mm²

Die Size

255 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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