AMD Radeon HD 6870 1600SP Edition vs AMD Radeon R9 295X2

VS

AMD Radeon HD 6870 1600SP Edition

AMD Radeon R9 295X2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 1600SP Edition and 4GB VRAM Radeon R9 295X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 1600SP Edition 's Advantages

Lower TDP (175W vs 500W)

AMD Radeon R9 295X2 's Advantages

Released 1 years and 3 months late

More VRAM (4GB vs 1024GB)

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

1216 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6870 1600SP Edition

2.72 TFLOPS

Radeon R9 295X2 +110%

5.733 TFLOPS

Radeon HD 6870 1600SP Edition

VS

Radeon R9 295X2

Graphics Card

Jan 2013

Release Date

Apr 2014

Northern Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

512bit

134.4GB/s

Bandwidth

320.0GB/s

Render Config

20

Compute Units

44

-

1600

Shading Units

2816

80

TMUs

176

32

ROPs

64

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

65.15 GPixel/s

68.00 GTexel/s

Texture Rate

179.2 GTexel/s

-

2.720 TFLOPS

FP32 (float)

5.733 TFLOPS

544.0 GFLOPS

FP64 (double)

716.7 GFLOPS

Board Design

175W

TDP

500W

450 W

Suggested PSU

900 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

2x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

Cypress

GPU Name

Vesuvius

Cypress XT (215-0735033)

GPU Variant

Vesuvius XT (215-0852022)

TeraScale 2

Architecture

GCN 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.154 billion

Transistors

6.2 billion

334 mm²

Die Size

438 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.0

N/A

Vulkan

1.2

-

5.0

Shader Model

6.3

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