AMD Radeon HD 7970 vs NVIDIA GeForce GTX 490

VS

AMD Radeon HD 7970

NVIDIA GeForce GTX 490

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 and 1536MB VRAM GeForce GTX 490 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970 's Advantages

More VRAM (3GB vs 1536GB)

Larger VRAM bandwidth (264.0GB/s vs 164.0GB/s)

1568 additional rendering cores

Lower TDP (250W vs 365W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 +224%

3.789 TFLOPS

GeForce GTX 490

1.166 TFLOPS

Radeon HD 7970

VS

GeForce GTX 490

Graphics Card

Dec 2011

Release Date

Unknown

Southern Islands

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

854 MHz

Memory

3GB

Memory Size

1536MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

384bit

264.0GB/s

Bandwidth

164.0GB/s

Render Config

32

Compute Units

-

SM Count

15

2048

Shading Units

480

128

TMUs

60

32

ROPs

48

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

768 KB

L2 Cache

768 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

18.24 GPixel/s

118.4 GTexel/s

Texture Rate

36.48 GTexel/s

-

3.789 TFLOPS

FP32 (float)

1166 GFLOPS

947.2 GFLOPS

FP64 (double)

145.8 GFLOPS

Board Design

250W

TDP

365W

600 W

Suggested PSU

750 W

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

Outputs

3x DVI 1x mini-DisplayPort

1x 6-pin + 1x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Tahiti

GPU Name

GF100

Tahiti XT (215-0821060)

GPU Variant

GF100-375-A3

GCN 1.0

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

3.1 billion

352 mm²

Die Size

529 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.0

5.1

Shader Model

5.1

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