NVIDIA GeForce GTX 970 vs AMD Radeon HD 6990

VS

NVIDIA GeForce GTX 970

AMD Radeon HD 6990

We compared two Desktop platform GPUs: 4GB VRAM GeForce GTX 970 and 2GB VRAM Radeon HD 6990 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)

GeForce GTX 970 +53%

3.92 TFLOPS

Radeon HD 6990

2.55 TFLOPS

GeForce GTX 970

VS

Radeon HD 6990

Graphics Card

Sep 2014

Release Date

Mar 2011

GeForce 900

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1050 MHz

Base Clock

-

1178 MHz

Boost Clock

-

1753 MHz

Memory Clock

1250 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

224.4GB/s

Bandwidth

160.0GB/s

Render Config

-

Compute Units

24

-

1664

Shading Units

1536

104

TMUs

96

56

ROPs

32

-

48 KB (per SMM)

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

512 KB

-

Theoretical Performance

65.97 GPixel/s

Pixel Rate

26.56 GPixel/s

122.5 GTexel/s

Texture Rate

79.68 GTexel/s

-

3.920 TFLOPS

FP32 (float)

2.550 TFLOPS

122.5 GFLOPS

FP64 (double)

637.4 GFLOPS

Board Design

148W

TDP

375W

300 W

Suggested PSU

750 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

2x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

GM204

GPU Name

Antilles

GM204-200-A1

GPU Variant

Antilles XT (215-0807027)

Maxwell 2.0

Architecture

TeraScale 3

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

5.2 billion

Transistors

2.64 billion

398 mm²

Die Size

389 mm²

Graphics Features

12 (12_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.3

Vulkan

N/A

5.2

CUDA

-

6.4

Shader Model

5.0

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