AMD Radeon HD 6990M vs AMD Radeon HD 8870M

VS

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6990M and 2GB VRAM Radeon HD 8870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6990M 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 72.00GB/s)

480 additional rendering cores

AMD Radeon HD 8870M 's Advantages

Released 1 years and 9 months late

Boost Clock775MHz

Score

Benchmark

FP32 (float)

Radeon HD 6990M +61%

1.602 TFLOPS

Radeon HD 8870M

0.992 TFLOPS

Radeon HD 6990M

VS

Radeon HD 8870M

Graphics Card

Jul 2011

Release Date

Apr 2013

Vancouver

Generation

Solar System

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

725 MHz

-

Boost Clock

775 MHz

900 MHz

Memory Clock

1125 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

115.2GB/s

Bandwidth

72.00GB/s

Render Config

-

SM Count

-

14

Compute Units

10

1120

Shading Units

640

56

TMUs

40

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

22.88 GPixel/s

Pixel Rate

12.40 GPixel/s

40.04 GTexel/s

Texture Rate

31.00 GTexel/s

-

FP16 (half)

-

1.602 TFLOPS

FP32 (float)

992.0 GFLOPS

-

FP64 (double)

62.00 GFLOPS

Graphics Processor

Blackcomb

GPU Name

Venus

Blackcomb XTX (216-0811030)

GPU Variant

Venus XT (216-0846000)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

1.5 billion

212 mm²

Die Size

123 mm²

Board Design

100W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

2.1 (1.2)

N/A

Vulkan

1.2.170

-

CUDA

-

5.0

Shader Model

6.5 (5.1)

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