NVIDIA GeForce GT 640 Rev. 2 vs NVIDIA GeForce GTX 285 Mac Edition

VS

NVIDIA GeForce GT 640 Rev. 2 NVIDIA GeForce GTX 285 Mac Edition

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 640 Rev. 2 and 1024MB VRAM GeForce GTX 285 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Released 4 years and 4 months late

144 additional rendering cores

Lower TDP (49W vs 204W)

NVIDIA GeForce GTX 285 Mac Edition 's Advantages

Larger VRAM bandwidth (159.0GB/s vs 40.06GB/s)

Score

Benchmark

FP32 (float)

GeForce GT 640 Rev. 2 +13%

0.803 TFLOPS

GeForce GTX 285 Mac Edition

0.708 TFLOPS

GeForce GT 640 Rev. 2

VS

GeForce GTX 285 Mac Edition

Graphics Card

May 2013

Release Date

Jan 2009

GeForce 600

Generation

GeForce 200

Desktop

Type

Desktop

PCIe 2.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1252 MHz

Memory Clock

1242 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR3

64bit

Memory Bus

512bit

40.06GB/s

Bandwidth

159.0GB/s

Render Config

-

SM Count

30

-

Compute Units

-

384

Shading Units

240

32

TMUs

80

8

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

-

512 KB

L2 Cache

256 KB

Theoretical Performance

8.368 GPixel/s

Pixel Rate

20.74 GPixel/s

33.47 GTexel/s

Texture Rate

51.84 GTexel/s

-

FP16 (half)

-

803.3 GFLOPS

FP32 (float)

708.5 GFLOPS

33.47 GFLOPS

FP64 (double)

88.56 GFLOPS

Graphics Processor

GK208

GPU Name

GT200B

GK208-400-A1

GPU Variant

G200-350-B3

Kepler 2.0

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

1.02 billion

Transistors

1.4 billion

87 mm²

Die Size

470 mm²

Board Design

49W

TDP

204W

200 W

Suggested PSU

550 W

1x DVI 1x HDMI 1.4a 1x VGA

Outputs

2x DVI 1x S-Video

None

Power Connectors

2x 6-pin

Graphics Features

12 (11_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.5

CUDA

1.3

5.1

Shader Model

4.0

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