AMD Radeon R7 265X OEM vs NVIDIA GeForce GT 645 OEM

VS

AMD Radeon R7 265X OEM

NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon R7 265X OEM 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 R7 265X OEM 's Advantages

Released 2 years and 4 months late

Boost Clock925MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (179.2GB/s vs 91.87GB/s)

992 additional rendering cores

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 150W)

Score

Benchmark

FP32 (float)

Radeon R7 265X OEM +164%

2.368 TFLOPS

GeForce GT 645 OEM

0.894 TFLOPS

Radeon R7 265X OEM

VS

GeForce GT 645 OEM

Graphics Card

Aug 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

900 MHz

Base Clock

-

925 MHz

Boost Clock

-

1400 MHz

Memory Clock

957 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

192bit

179.2GB/s

Bandwidth

91.87GB/s

Render Config

20

Compute Units

-

SM Count

6

1280

Shading Units

288

80

TMUs

48

32

ROPs

24

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

384 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

9.312 GPixel/s

74.00 GTexel/s

Texture Rate

37.25 GTexel/s

-

2.368 TFLOPS

FP32 (float)

894.0 GFLOPS

148.0 GFLOPS

FP64 (double)

74.50 GFLOPS

Board Design

150W

TDP

102W

450 W

Suggested PSU

300 W

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 6-pin

Power Connectors

-

Graphics Processor

Curacao

GPU Name

GF114

Curacao PRO (215-0848000)

GPU Variant

-

GCN 1.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

1.95 billion

212 mm²

Die Size

332 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

5.1

Shader Model

5.1

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