AMD Radeon HD 6990 vs NVIDIA GeForce GTX 970

VS

AMD Radeon HD 6990

NVIDIA GeForce GTX 970

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 4GB VRAM GeForce GTX 970 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 970 's Advantages

Released 3 years and 6 months late

Boost Clock1178MHz

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (224.4GB/s vs 160.0GB/s)

128 additional rendering cores

Lower TDP (148W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990

2.55 TFLOPS

GeForce GTX 970 +53%

3.92 TFLOPS

Radeon HD 6990

VS

GeForce GTX 970

Graphics Card

Mar 2011

Release Date

Sep 2014

Northern Islands

Generation

GeForce 900

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1050 MHz

-

Boost Clock

1178 MHz

1250 MHz

Memory Clock

1753 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

160.0GB/s

Bandwidth

224.4GB/s

Render Config

24

Compute Units

-

1536

Shading Units

1664

96

TMUs

104

32

ROPs

56

-

8 KB (per CU)

L1 Cache

48 KB (per SMM)

512 KB

L2 Cache

2 MB

-

Theoretical Performance

26.56 GPixel/s

Pixel Rate

65.97 GPixel/s

79.68 GTexel/s

Texture Rate

122.5 GTexel/s

-

2.550 TFLOPS

FP32 (float)

3.920 TFLOPS

637.4 GFLOPS

FP64 (double)

122.5 GFLOPS

Board Design

375W

TDP

148W

750 W

Suggested PSU

300 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

1x DVI 1x HDMI 2.0 3x DisplayPort 1.4a

2x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Antilles

GPU Name

GM204

Antilles XT (215-0807027)

GPU Variant

GM204-200-A1

TeraScale 3

Architecture

Maxwell 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.64 billion

Transistors

5.2 billion

389 mm²

Die Size

398 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_1)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.3

-

CUDA

5.2

5.0

Shader Model

6.4

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