NVIDIA GeForce GTX 645 OEM vs ATI Radeon HD 5770

VS

NVIDIA GeForce GTX 645 OEM

ATI Radeon HD 5770

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 1024MB VRAM Radeon HD 5770 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 645 OEM 's Advantages

Released 3 years and 6 months late

Lower TDP (65W vs 108W)

ATI Radeon HD 5770 's Advantages

Larger VRAM bandwidth (76.80GB/s vs 64.00GB/s)

224 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

Radeon HD 5770 +43%

1.36 TFLOPS

GeForce GTX 645 OEM

VS

Radeon HD 5770

Graphics Card

Apr 2013

Release Date

Oct 2009

GeForce 600

Generation

Evergreen

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

1200 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

76.80GB/s

Render Config

-

Compute Units

10

-

576

Shading Units

800

48

TMUs

40

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

13.60 GPixel/s

39.55 GTexel/s

Texture Rate

34.00 GTexel/s

-

949.2 GFLOPS

FP32 (float)

1360 GFLOPS

39.55 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

108W

250 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

None

Power Connectors

1x 6-pin

Graphics Processor

GK106

GPU Name

Juniper

GK106-200-A1

GPU Variant

Juniper XT (215-0754013)

Kepler

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.54 billion

Transistors

1.04 billion

221 mm²

Die Size

166 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

5.0

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