NVIDIA GeForce GTX 490 vs AMD Radeon HD 7950

VS

NVIDIA GeForce GTX 490

AMD Radeon HD 7950

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 490 and 3GB VRAM Radeon HD 7950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950 's Advantages

More VRAM (3GB vs 1536GB)

Larger VRAM bandwidth (240.0GB/s vs 164.0GB/s)

1312 additional rendering cores

Lower TDP (200W vs 365W)

Score

Benchmark

FP32 (float)

GeForce GTX 490

1.166 TFLOPS

Radeon HD 7950 +145%

2.867 TFLOPS

GeForce GTX 490

VS

Radeon HD 7950

Graphics Card

Unknown

Release Date

Jan 2012

GeForce 400

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

854 MHz

Memory Clock

1250 MHz

Memory

1536MB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

384bit

164.0GB/s

Bandwidth

240.0GB/s

Render Config

-

Compute Units

28

15

SM Count

-

480

Shading Units

1792

60

TMUs

112

48

ROPs

32

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

768 KB

-

Theoretical Performance

18.24 GPixel/s

Pixel Rate

25.60 GPixel/s

36.48 GTexel/s

Texture Rate

89.60 GTexel/s

-

1166 GFLOPS

FP32 (float)

2.867 TFLOPS

145.8 GFLOPS

FP64 (double)

716.8 GFLOPS

Board Design

365W

TDP

200W

750 W

Suggested PSU

550 W

3x DVI 1x mini-DisplayPort

Outputs

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

2x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

GF100

GPU Name

Tahiti

GF100-375-A3

GPU Variant

Tahiti PRO (215-0821056)

Fermi

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

3.1 billion

Transistors

4.313 billion

529 mm²

Die Size

352 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

2.0

CUDA

-

5.1

Shader Model

5.1

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