NVIDIA GeForce GT 640M LE vs NVIDIA GeForce GTX 770M

VS

NVIDIA GeForce GT 640M LE NVIDIA GeForce GTX 770M

We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 640M LE and 3GB VRAM GeForce GTX 770M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640M LE 's Advantages

Lower TDP (32W vs 75W)

NVIDIA GeForce GTX 770M 's Advantages

Released 1 years late

Boost Clock797MHz

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (96.19GB/s vs 50.24GB/s)

864 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640M LE

0.289 TFLOPS

GeForce GTX 770M +429%

1.53 TFLOPS

GeForce GT 640M LE

VS

GeForce GTX 770M

Graphics Card

May 2012

Release Date

May 2013

GeForce 600M

Generation

GeForce 700M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

Base Clock

706 MHz

-

Boost Clock

797 MHz

785 MHz

Memory Clock

1002 MHz

Memory

2GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

192bit

50.24GB/s

Bandwidth

96.19GB/s

Render Config

2

SM Count

-

Compute Units

-

96

Shading Units

960

16

TMUs

80

4

ROPs

24

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

384 KB

Theoretical Performance

3.012 GPixel/s

Pixel Rate

15.94 GPixel/s

12.05 GTexel/s

Texture Rate

63.76 GTexel/s

-

FP16 (half)

-

289.0 GFLOPS

FP32 (float)

1.530 TFLOPS

24.08 GFLOPS

FP64 (double)

63.76 GFLOPS

Graphics Processor

GF108

GPU Name

GK106

-

GPU Variant

N14E-GS-A1

Fermi

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.585 billion

Transistors

2.54 billion

116 mm²

Die Size

221 mm²

Board Design

32W

TDP

75W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

2.1

CUDA

3.0

5.1

Shader Model

5.1

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