AMD Radeon HD 7870 XT vs AMD Radeon R7 265

VS

AMD Radeon HD 7870 XT

AMD Radeon R7 265

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 2GB VRAM Radeon R7 265 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 XT 's Advantages

Boost Clock has increased by 5% (975MHz vs 925MHz)

Larger VRAM bandwidth (192.0GB/s vs 179.2GB/s)

512 additional rendering cores

AMD Radeon R7 265 's Advantages

Released 1 years and 3 months late

Lower TDP (150W vs 185W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT +58%

2.995 TFLOPS

Radeon R7 265

1.894 TFLOPS

Radeon HD 7870 XT

VS

Radeon R7 265

Graphics Card

Nov 2012

Release Date

Feb 2014

Southern Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

925 MHz

Base Clock

900 MHz

975 MHz

Boost Clock

925 MHz

1500 MHz

Memory Clock

1400 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

192.0GB/s

Bandwidth

179.2GB/s

Render Config

24

Compute Units

16

-

1536

Shading Units

1024

96

TMUs

64

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

31.20 GPixel/s

Pixel Rate

29.60 GPixel/s

93.60 GTexel/s

Texture Rate

59.20 GTexel/s

-

2.995 TFLOPS

FP32 (float)

1.894 TFLOPS

748.8 GFLOPS

FP64 (double)

118.4 GFLOPS

Board Design

185W

TDP

150W

450 W

Suggested PSU

450 W

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

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Tahiti

GPU Name

Pitcairn

Tahiti LE (215-0821122)

GPU Variant

Pitcairn PRO (215-0828062)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

2.8 billion

352 mm²

Die Size

212 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

5.1

Shader Model

5.1

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