AMD Radeon R9 295X2 vs AMD Radeon HD 6850 X2

VS

AMD Radeon R9 295X2

AMD Radeon HD 6850 X2

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 295X2 and 2GB VRAM Radeon HD 6850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 295X2 's Advantages

Released 2 years and 7 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (320.0GB/s vs 134.4GB/s)

1856 additional rendering cores

AMD Radeon HD 6850 X2 's Advantages

Lower TDP (254W vs 500W)

Score

Benchmark

FP32 (float)

Radeon R9 295X2 +273%

5.733 TFLOPS

Radeon HD 6850 X2

1.536 TFLOPS

Radeon R9 295X2

VS

Radeon HD 6850 X2

Graphics Card

Apr 2014

Release Date

Sep 2011

Volcanic Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

1050 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

256bit

320.0GB/s

Bandwidth

134.4GB/s

Render Config

44

Compute Units

12

-

2816

Shading Units

960

176

TMUs

48

64

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

1024 KB

L2 Cache

512 KB

-

Theoretical Performance

65.15 GPixel/s

Pixel Rate

25.60 GPixel/s

179.2 GTexel/s

Texture Rate

38.40 GTexel/s

-

5.733 TFLOPS

FP32 (float)

1.536 TFLOPS

716.7 GFLOPS

FP64 (double)

-

Board Design

500W

TDP

254W

900 W

Suggested PSU

600 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

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

2x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Vesuvius

GPU Name

Barts

Vesuvius XT (215-0852022)

GPU Variant

Barts PRO (215-0798006)

GCN 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

6.2 billion

Transistors

1.7 billion

438 mm²

Die Size

255 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.0

OpenCL

1.2

Vulkan

N/A

-

6.3

Shader Model

5.0

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