AMD Radeon HD 6870 vs AMD Radeon R7 265X OEM

VS

AMD Radeon HD 6870 AMD Radeon R7 265X OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 2GB VRAM Radeon R7 265X OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R7 265X OEM 's Advantages

Released 3 years and 10 months late

Boost Clock925MHz

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (179.2GB/s vs 134.4GB/s)

160 additional rendering cores

Lower TDP (150W vs 151W)

Score

Benchmark

FP32 (float)

Radeon HD 6870

2.016 TFLOPS

Radeon R7 265X OEM +17%

2.368 TFLOPS

Radeon HD 6870

VS

Radeon R7 265X OEM

Graphics Card

Oct 2010

Release Date

Aug 2014

Northern Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

900 MHz

-

Boost Clock

925 MHz

1050 MHz

Memory Clock

1400 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

179.2GB/s

Render Config

-

SM Count

-

14

Compute Units

20

1120

Shading Units

1280

56

TMUs

80

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

Theoretical Performance

28.80 GPixel/s

Pixel Rate

29.60 GPixel/s

50.40 GTexel/s

Texture Rate

74.00 GTexel/s

-

FP16 (half)

-

2.016 TFLOPS

FP32 (float)

2.368 TFLOPS

-

FP64 (double)

148.0 GFLOPS

Graphics Processor

Barts

GPU Name

Curacao

Barts XT (215-0798000)

GPU Variant

Curacao PRO (215-0848000)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

2.8 billion

255 mm²

Die Size

212 mm²

Board Design

151W

TDP

150W

450 W

Suggested PSU

450 W

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

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

CUDA

-

5.0

Shader Model

5.1

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