AMD Radeon RX Vega 64 Limited Edition vs NVIDIA GeForce GT 645 OEM

VS

AMD Radeon RX Vega 64 Limited Edition

NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX Vega 64 Limited Edition and 1024MB VRAM GeForce GT 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX Vega 64 Limited Edition 's Advantages

Released 5 years and 4 months late

Boost Clock1546MHz

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (483.8GB/s vs 91.87GB/s)

3808 additional rendering cores

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 295W)

Score

Benchmark

FP32 (float)

Radeon RX Vega 64 Limited Edition +1316%

12.66 TFLOPS

GeForce GT 645 OEM

0.894 TFLOPS

Radeon RX Vega 64 Limited Edition

VS

GeForce GT 645 OEM

Graphics Card

Aug 2017

Release Date

Apr 2012

Vega

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1247 MHz

Base Clock

-

1546 MHz

Boost Clock

-

945 MHz

Memory Clock

957 MHz

Memory

8GB

Memory Size

1024MB

HBM2

Memory Type

GDDR5

2048bit

Memory Bus

192bit

483.8GB/s

Bandwidth

91.87GB/s

Render Config

64

Compute Units

-

SM Count

6

4096

Shading Units

288

256

TMUs

48

64

ROPs

24

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

4 MB

L2 Cache

384 KB

-

Theoretical Performance

98.94 GPixel/s

Pixel Rate

9.312 GPixel/s

395.8 GTexel/s

Texture Rate

37.25 GTexel/s

25.33 TFLOPS

FP16 (half)

-

12.66 TFLOPS

FP32 (float)

894.0 GFLOPS

791.6 GFLOPS

FP64 (double)

74.50 GFLOPS

Board Design

295W

TDP

102W

600 W

Suggested PSU

300 W

1x HDMI 2.0b 3x DisplayPort 1.4a

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 8-pin

Power Connectors

-

Graphics Processor

Vega 10

GPU Name

GF114

Vega 10 XT (215-0894200)

GPU Variant

-

GCN 5.0

Architecture

Fermi 2.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

12.5 billion

Transistors

1.95 billion

495 mm²

Die Size

332 mm²

Graphics Features

12 (12_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

6.4

Shader Model

5.1

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