NVIDIA GeForce GTX 645 OEM vs AMD Radeon HD 7790

VS

NVIDIA GeForce GTX 645 OEM

AMD Radeon HD 7790

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 1024MB VRAM Radeon HD 7790 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 645 OEM 's Advantages

Lower TDP (65W vs 85W)

AMD Radeon HD 7790 's Advantages

Larger VRAM bandwidth (96.00GB/s vs 64.00GB/s)

320 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

Radeon HD 7790 +88%

1.792 TFLOPS

GeForce GTX 645 OEM

VS

Radeon HD 7790

Graphics Card

Apr 2013

Release Date

Mar 2013

GeForce 600

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

1500 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

96.00GB/s

Render Config

-

Compute Units

14

-

576

Shading Units

896

48

TMUs

56

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

16.00 GPixel/s

39.55 GTexel/s

Texture Rate

56.00 GTexel/s

-

949.2 GFLOPS

FP32 (float)

1.792 TFLOPS

39.55 GFLOPS

FP64 (double)

112.0 GFLOPS

Board Design

65W

TDP

85W

250 W

Suggested PSU

250 W

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

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

GK106

GPU Name

Bonaire

GK106-200-A1

GPU Variant

Bonaire XT (215-0839039)

Kepler

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.54 billion

Transistors

2.08 billion

221 mm²

Die Size

160 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.0

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

6.3

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