AMD Radeon R9 Nano vs NVIDIA GeForce GT 640 OEM Rebrand

VS

AMD Radeon R9 Nano NVIDIA GeForce GT 640 OEM Rebrand

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 Nano 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 R9 Nano 's Advantages

Released 3 years and 4 months late

More VRAM (4GB vs 1GB)

Larger VRAM bandwidth (512.0GB/s vs 38.40GB/s)

3952 additional rendering cores

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 175W)

Score

Benchmark

FP32 (float)

Radeon R9 Nano +1873%

8.192 TFLOPS

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon R9 Nano

VS

GeForce GT 640 OEM Rebrand

Graphics Card

Aug 2015

Release Date

Apr 2012

Pirate Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

500 MHz

Memory Clock

800 MHz

Memory

4GB

Memory Size

1536MB

HBM

Memory Type

DDR3

4096bit

Memory Bus

192bit

512.0GB/s

Bandwidth

38.40GB/s

Render Config

-

SM Count

3

64

Compute Units

-

4096

Shading Units

144

256

TMUs

24

64

ROPs

24

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

2 MB

L2 Cache

384 KB

Theoretical Performance

64.00 GPixel/s

Pixel Rate

4.320 GPixel/s

256.0 GTexel/s

Texture Rate

17.28 GTexel/s

8.192 TFLOPS

FP16 (half)

-

8.192 TFLOPS

FP32 (float)

414.7 GFLOPS

512.0 GFLOPS

FP64 (double)

34.56 GFLOPS

Graphics Processor

Fiji

GPU Name

GF116

Fiji XT CA (215-0862120)

GPU Variant

GF116-150-A1

GCN 3.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

8.9 billion

Transistors

1.17 billion

596 mm²

Die Size

238 mm²

Board Design

175W

TDP

75W

450 W

Suggested PSU

250 W

1x HDMI 1.4a 3x DisplayPort 1.2

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 8-pin

Power Connectors

None

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.0

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

6.3

Shader Model

5.1

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