AMD Radeon R9 380X vs NVIDIA GeForce GT 640 OEM

VS

AMD Radeon R9 380X

NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 380X and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 380X 's Advantages

Released 3 years and 7 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (182.4GB/s vs 28.51GB/s)

1664 additional rendering cores

NVIDIA GeForce GT 640 OEM 's Advantages

Lower TDP (50W vs 190W)

Score

Benchmark

FP32 (float)

Radeon R9 380X +549%

3.973 TFLOPS

GeForce GT 640 OEM

0.612 TFLOPS

Radeon R9 380X

VS

GeForce GT 640 OEM

Graphics Card

Nov 2015

Release Date

Apr 2012

Pirate Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1425 MHz

Memory Clock

891 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

182.4GB/s

Bandwidth

28.51GB/s

Render Config

32

Compute Units

-

2048

Shading Units

384

128

TMUs

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

31.04 GPixel/s

Pixel Rate

6.376 GPixel/s

124.2 GTexel/s

Texture Rate

25.50 GTexel/s

3.973 TFLOPS

FP16 (half)

-

3.973 TFLOPS

FP32 (float)

612.1 GFLOPS

248.3 GFLOPS

FP64 (double)

25.50 GFLOPS

Board Design

190W

TDP

50W

450 W

Suggested PSU

250 W

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

Outputs

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

2x 6-pin

Power Connectors

None

Graphics Processor

Antigua

GPU Name

GK107

Antigua XT (215-0877016)

GPU Variant

GK107-320-A2

GCN 3.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

1.27 billion

366 mm²

Die Size

118 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.0

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

6.3

Shader Model

5.1

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