AMD Radeon E8870 vs AMD Radeon HD 6990M

VS

AMD Radeon E8870

AMD Radeon HD 6990M

We compared two Mobile platform GPUs: 4GB VRAM Radeon E8870 and 2GB VRAM Radeon HD 6990M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon E8870 's Advantages

Released 4 years and 2 months late

More VRAM (4GB vs 2GB)

Lower TDP (75W vs 100W)

AMD Radeon HD 6990M 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 96.00GB/s)

352 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon E8870

1.536 TFLOPS

Radeon HD 6990M +4%

1.602 TFLOPS

Radeon E8870

VS

Radeon HD 6990M

Graphics Card

Sep 2015

Release Date

Jul 2011

Embedded

Generation

Vancouver

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-B (3.0)

Clock Speeds

-

1500 MHz

Memory Clock

900 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

96.00GB/s

Bandwidth

115.2GB/s

Render Config

12

Compute Units

14

-

768

Shading Units

1120

48

TMUs

56

16

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

16.00 GPixel/s

Pixel Rate

22.88 GPixel/s

48.00 GTexel/s

Texture Rate

40.04 GTexel/s

-

1.536 TFLOPS

FP32 (float)

1.602 TFLOPS

96.00 GFLOPS

FP64 (double)

-

Board Design

75W

TDP

100W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Saturn

GPU Name

Blackcomb

Saturn PRO

GPU Variant

Blackcomb XTX (216-0811030)

GCN 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.08 billion

Transistors

1.7 billion

160 mm²

Die Size

212 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.0

OpenCL

1.2

Vulkan

N/A

-

6.3

Shader Model

5.0

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