AMD Radeon R9 295X2 vs NVIDIA GeForce GTX 645 OEM

VS

AMD Radeon R9 295X2

NVIDIA GeForce GTX 645 OEM

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 295X2 and 1024MB VRAM GeForce GTX 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 1 years late

More VRAM (4GB vs 1024GB)

Larger VRAM bandwidth (320.0GB/s vs 64.00GB/s)

2240 additional rendering cores

NVIDIA GeForce GTX 645 OEM 's Advantages

Lower TDP (65W vs 500W)

Score

Benchmark

FP32 (float)

Radeon R9 295X2 +504%

5.733 TFLOPS

GeForce GTX 645 OEM

0.949 TFLOPS

Radeon R9 295X2

VS

GeForce GTX 645 OEM

Graphics Card

Apr 2014

Release Date

Apr 2013

Volcanic Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

1000 MHz

Memory

4GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

128bit

320.0GB/s

Bandwidth

64.00GB/s

Render Config

44

Compute Units

-

2816

Shading Units

576

176

TMUs

48

64

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

65.15 GPixel/s

Pixel Rate

9.888 GPixel/s

179.2 GTexel/s

Texture Rate

39.55 GTexel/s

-

5.733 TFLOPS

FP32 (float)

949.2 GFLOPS

716.7 GFLOPS

FP64 (double)

39.55 GFLOPS

Board Design

500W

TDP

65W

900 W

Suggested PSU

250 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

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

2x 8-pin

Power Connectors

None

Graphics Processor

Vesuvius

GPU Name

GK106

Vesuvius XT (215-0852022)

GPU Variant

GK106-200-A1

GCN 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

6.2 billion

Transistors

2.54 billion

438 mm²

Die Size

221 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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