AMD Radeon R9 295X2 vs NVIDIA GeForce GT 645 OEM

VS

AMD Radeon R9 295X2

NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 295X2 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 R9 295X2 's Advantages

Released 2 years late

More VRAM (4GB vs 1024GB)

Larger VRAM bandwidth (320.0GB/s vs 91.87GB/s)

2528 additional rendering cores

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 500W)

Score

Benchmark

FP32 (float)

Radeon R9 295X2 +541%

5.733 TFLOPS

GeForce GT 645 OEM

0.894 TFLOPS

Radeon R9 295X2

VS

GeForce GT 645 OEM

Graphics Card

Apr 2014

Release Date

Apr 2012

Volcanic Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

957 MHz

Memory

4GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

192bit

320.0GB/s

Bandwidth

91.87GB/s

Render Config

44

Compute Units

-

SM Count

6

2816

Shading Units

288

176

TMUs

48

64

ROPs

24

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

1024 KB

L2 Cache

384 KB

-

Theoretical Performance

65.15 GPixel/s

Pixel Rate

9.312 GPixel/s

179.2 GTexel/s

Texture Rate

37.25 GTexel/s

-

5.733 TFLOPS

FP32 (float)

894.0 GFLOPS

716.7 GFLOPS

FP64 (double)

74.50 GFLOPS

Board Design

500W

TDP

102W

900 W

Suggested PSU

300 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 8-pin

Power Connectors

-

Graphics Processor

Vesuvius

GPU Name

GF114

Vesuvius XT (215-0852022)

GPU Variant

-

GCN 2.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

6.2 billion

Transistors

1.95 billion

438 mm²

Die Size

332 mm²

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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