AMD Radeon HD 8970 OEM vs AMD Radeon HD 7990

VS

AMD Radeon HD 8970 OEM

AMD Radeon HD 7990

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8970 OEM and 3GB VRAM Radeon HD 7990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8970 OEM 's Advantages

Lower TDP (250W vs 375W)

AMD Radeon HD 7990 's Advantages

Boost Clock1000MHz

Larger VRAM bandwidth (288.0GB/s vs 264.0GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 8970 OEM

3.789 TFLOPS

Radeon HD 7990 +8%

4.096 TFLOPS

Radeon HD 8970 OEM

VS

Radeon HD 7990

Graphics Card

Jan 2013

Release Date

Apr 2013

Sea Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

950 MHz

-

Boost Clock

1000 MHz

1375 MHz

Memory Clock

1500 MHz

Memory

3GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

384bit

264.0GB/s

Bandwidth

288.0GB/s

Render Config

32

Compute Units

32

-

2048

Shading Units

2048

128

TMUs

128

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

768 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

32.00 GPixel/s

118.4 GTexel/s

Texture Rate

128.0 GTexel/s

-

3.789 TFLOPS

FP32 (float)

4.096 TFLOPS

947.2 GFLOPS

FP64 (double)

1024 GFLOPS

Board Design

250W

TDP

375W

600 W

Suggested PSU

750 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 6-pin + 1x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Tahiti

GPU Name

Malta

Tahiti XT (215-0821060)

GPU Variant

Malta XT (215-0849026)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

4.313 billion

352 mm²

Die Size

365 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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