NVIDIA GeForce GT 645 OEM vs AMD Radeon RX 480

VS

NVIDIA GeForce GT 645 OEM

AMD Radeon RX 480

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 8GB VRAM Radeon RX 480 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 150W)

AMD Radeon RX 480 's Advantages

Released 4 years and 2 months late

Boost Clock1266MHz

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (256.0GB/s vs 91.87GB/s)

2016 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

Radeon RX 480 +552%

5.834 TFLOPS

GeForce GT 645 OEM

VS

Radeon RX 480

Graphics Card

Apr 2012

Release Date

Jun 2016

GeForce 600

Generation

Arctic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1120 MHz

-

Boost Clock

1266 MHz

957 MHz

Memory Clock

2000 MHz

Memory

1024MB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

256bit

91.87GB/s

Bandwidth

256.0GB/s

Render Config

-

Compute Units

36

6

SM Count

-

288

Shading Units

2304

48

TMUs

144

24

ROPs

32

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

2 MB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

40.51 GPixel/s

37.25 GTexel/s

Texture Rate

182.3 GTexel/s

-

FP16 (half)

5.834 TFLOPS

894.0 GFLOPS

FP32 (float)

5.834 TFLOPS

74.50 GFLOPS

FP64 (double)

364.6 GFLOPS

Board Design

102W

TDP

150W

300 W

Suggested PSU

450 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x HDMI 2.0b 3x DisplayPort 1.4a

-

Power Connectors

1x 6-pin

Graphics Processor

GF114

GPU Name

Ellesmere

-

GPU Variant

Polaris 10 XT (215-0876184)

Fermi 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

40 nm

Process Size

14 nm

1.95 billion

Transistors

5.7 billion

332 mm²

Die Size

232 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.1

OpenCL

2.1

N/A

Vulkan

1.2

2.1

CUDA

-

5.1

Shader Model

6.4

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