AMD Radeon HD 8970 OEM vs NVIDIA GeForce GT 640 OEM Rebrand

VS

AMD Radeon HD 8970 OEM NVIDIA GeForce GT 640 OEM Rebrand

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8970 OEM and 1536MB VRAM GeForce GT 640 OEM Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8970 OEM 's Advantages

Released 9 months late

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (264.0GB/s vs 38.40GB/s)

1904 additional rendering cores

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 8970 OEM +813%

3.789 TFLOPS

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon HD 8970 OEM

VS

GeForce GT 640 OEM Rebrand

Graphics Card

Jan 2013

Release Date

Apr 2012

Sea Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1375 MHz

Memory Clock

800 MHz

Memory

3GB

Memory Size

1536MB

GDDR5

Memory Type

DDR3

384bit

Memory Bus

192bit

264.0GB/s

Bandwidth

38.40GB/s

Render Config

-

SM Count

3

32

Compute Units

-

2048

Shading Units

144

128

TMUs

24

32

ROPs

24

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

768 KB

L2 Cache

384 KB

Theoretical Performance

29.60 GPixel/s

Pixel Rate

4.320 GPixel/s

118.4 GTexel/s

Texture Rate

17.28 GTexel/s

-

FP16 (half)

-

3.789 TFLOPS

FP32 (float)

414.7 GFLOPS

947.2 GFLOPS

FP64 (double)

34.56 GFLOPS

Graphics Processor

Tahiti

GPU Name

GF116

Tahiti XT (215-0821060)

GPU Variant

GF116-150-A1

GCN 1.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

1.17 billion

352 mm²

Die Size

238 mm²

Board Design

250W

TDP

75W

600 W

Suggested PSU

250 W

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

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 6-pin + 1x 8-pin

Power Connectors

None

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

2.1

5.1

Shader Model

5.1

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