NVIDIA GeForce GT 640 OEM vs AMD Radeon R9 280X

VS

NVIDIA GeForce GT 640 OEM AMD Radeon R9 280X

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 OEM and 3GB VRAM Radeon R9 280X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM 's Advantages

Lower TDP (50W vs 250W)

AMD Radeon R9 280X 's Advantages

Released 1 years and 6 months late

Boost Clock1000MHz

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.0GB/s vs 28.51GB/s)

1664 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM

0.612 TFLOPS

Radeon R9 280X +569%

4.096 TFLOPS

GeForce GT 640 OEM

VS

Radeon R9 280X

Graphics Card

Apr 2012

Release Date

Oct 2013

GeForce 600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

1000 MHz

891 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

3GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

384bit

28.51GB/s

Bandwidth

288.0GB/s

Render Config

-

SM Count

-

Compute Units

32

384

Shading Units

2048

32

TMUs

128

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

Theoretical Performance

6.376 GPixel/s

Pixel Rate

32.00 GPixel/s

25.50 GTexel/s

Texture Rate

128.0 GTexel/s

-

FP16 (half)

-

612.1 GFLOPS

FP32 (float)

4.096 TFLOPS

25.50 GFLOPS

FP64 (double)

1024 GFLOPS

Graphics Processor

GK107

GPU Name

Tahiti

GK107-320-A2

GPU Variant

Tahiti XTL (215-0821065)

Kepler

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

4.313 billion

118 mm²

Die Size

352 mm²

Board Design

50W

TDP

250W

250 W

Suggested PSU

600 W

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

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

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

5.1

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