AMD Radeon HD 7750 vs AMD Radeon HD 6990

VS

AMD Radeon HD 7750

AMD Radeon HD 6990

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7750 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 HD 7750 's Advantages

Released 11 months late

Lower TDP (55W vs 375W)

AMD Radeon HD 6990 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (160.0GB/s vs 72.00GB/s)

1024 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7750

0.819 TFLOPS

Radeon HD 6990 +211%

2.55 TFLOPS

Radeon HD 7750

VS

Radeon HD 6990

Graphics Card

Feb 2012

Release Date

Mar 2011

Southern Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1125 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

72.00GB/s

Bandwidth

160.0GB/s

Render Config

8

Compute Units

24

-

512

Shading Units

1536

32

TMUs

96

16

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

12.80 GPixel/s

Pixel Rate

26.56 GPixel/s

25.60 GTexel/s

Texture Rate

79.68 GTexel/s

-

819.2 GFLOPS

FP32 (float)

2.550 TFLOPS

51.20 GFLOPS

FP64 (double)

637.4 GFLOPS

Board Design

55W

TDP

375W

250 W

Suggested PSU

750 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

None

Power Connectors

2x 8-pin

Graphics Processor

Cape Verde

GPU Name

Antilles

Cape Verde PRO

GPU Variant

Antilles XT (215-0807027)

GCN 1.0

Architecture

TeraScale 3

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.5 billion

Transistors

2.64 billion

123 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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