AMD Radeon HD 7970 vs NVIDIA GeForce GTX 745 OEM

VS

AMD Radeon HD 7970

NVIDIA GeForce GTX 745 OEM

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 and 4GB VRAM GeForce GTX 745 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970 's Advantages

Larger VRAM bandwidth (264.0GB/s vs 28.80GB/s)

1664 additional rendering cores

NVIDIA GeForce GTX 745 OEM 's Advantages

Released 2 years and 2 months late

More VRAM (4GB vs 3GB)

Lower TDP (55W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 +377%

3.789 TFLOPS

GeForce GTX 745 OEM

0.793 TFLOPS

Radeon HD 7970

VS

GeForce GTX 745 OEM

Graphics Card

Dec 2011

Release Date

Feb 2014

Southern Islands

Generation

GeForce 700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

900 MHz

Memory

3GB

Memory Size

4GB

GDDR5

Memory Type

DDR3

384bit

Memory Bus

128bit

264.0GB/s

Bandwidth

28.80GB/s

Render Config

32

Compute Units

-

2048

Shading Units

384

128

TMUs

24

32

ROPs

16

-

16 KB (per CU)

L1 Cache

64 KB (per SMM)

768 KB

L2 Cache

2 MB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

16.53 GPixel/s

118.4 GTexel/s

Texture Rate

24.79 GTexel/s

-

3.789 TFLOPS

FP32 (float)

793.3 GFLOPS

947.2 GFLOPS

FP64 (double)

24.79 GFLOPS

Board Design

250W

TDP

55W

600 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 2.0 1x VGA

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

GM107

Tahiti XT (215-0821060)

GPU Variant

GM107-220-A2

GCN 1.0

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

1.87 billion

352 mm²

Die Size

148 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.3

-

CUDA

5.0

5.1

Shader Model

5.1

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