AMD Radeon R7 265X OEM vs AMD Radeon HD 6990

VS

AMD Radeon R7 265X OEM

AMD Radeon HD 6990

We compared two Desktop platform GPUs: 2GB VRAM Radeon R7 265X OEM and 2GB VRAM Radeon HD 6990 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 5 months late

Boost Clock925MHz

Larger VRAM bandwidth (179.2GB/s vs 160.0GB/s)

Lower TDP (150W vs 375W)

AMD Radeon HD 6990 's Advantages

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R7 265X OEM

2.368 TFLOPS

Radeon HD 6990 +7%

2.55 TFLOPS

Radeon R7 265X OEM

VS

Radeon HD 6990

Graphics Card

Aug 2014

Release Date

Mar 2011

Volcanic Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

900 MHz

Base Clock

-

925 MHz

Boost Clock

-

1400 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

179.2GB/s

Bandwidth

160.0GB/s

Render Config

20

Compute Units

24

-

1280

Shading Units

1536

80

TMUs

96

32

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

26.56 GPixel/s

74.00 GTexel/s

Texture Rate

79.68 GTexel/s

-

2.368 TFLOPS

FP32 (float)

2.550 TFLOPS

148.0 GFLOPS

FP64 (double)

637.4 GFLOPS

Board Design

150W

TDP

375W

450 W

Suggested PSU

750 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

Curacao

GPU Name

Antilles

Curacao PRO (215-0848000)

GPU Variant

Antilles XT (215-0807027)

GCN 1.0

Architecture

TeraScale 3

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

2.64 billion

212 mm²

Die Size

389 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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