AMD Radeon HD 7750M vs NVIDIA GeForce GT 640

Table of Contents

Graphics Processor

GPU model Chelsea GK107
GPU variant Chelsea PRO GK107-300-A2
Architecture GCN 1.0 Kepler
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 1,500 million 1,270 million
Die size 123 mm² 118 mm²

Mobile graphics

Release date Apr 24th, 2012
Generation London (HD 7700M)
Production End-of-life
Interface PCIe 2.0 x16
Predecessor Vancouver
Successor Solar System

Clocks

GPU clock 575 MHz 902 MHz
Memory clock 1000 MHz 4 Gbps effective 891 MHz 1782 Mbps effective

Memory Configuration

Memory size 2 GB 2 GB
Memory type GDDR5 DDR3
Memory bus width 128 bit 128 bit
Bandwidth 64.00 GB/s 28.51 GB/s

Render Configuration

Shading units 512 384
TMUs 32 32
ROPs 16 16
Compute units 8
Cache L1 16 KB (per CU) 16 KB (per SMX)
Cache L2 256 KB 256 KB
SMX count 2

Performance

Pixel rate 9.200 GPixel/s 7.216 GPixel/s
Texture rate 18.40 GTexel/s 28.86 GTexel/s
FP32 (float) performance 588.8 GFLOPS 692.7 GFLOPS
FP64 (double) performance 36.80 GFLOPS (1:16) 28.86 GFLOPS (1:24)

Dimensions & Outputs

TDP 28 W 65 W
Outputs No outputs 1x DVI1x HDMI1x DisplayPort
Slot width Single-slot
Length 145 mm 5.7 inches
Suggested PSU 250 W
Power connectors None
Board number P2011

API Support & Features

DirectX 12 (11_1) 12 (11_0)
OpenGL 4.6 4.6
OpenCL 1.2 3.0
Vulkan 1.2 1.1
Shader model 5.1 5.1
CUDA 3.0

Other Features

Graphics Card

Release date Jun 5th, 2012
Generation GeForce 600
Production End-of-life
Launch price 99 USD
Interface PCIe 3.0 x16
Predecessor GeForce 500
Successor GeForce 700

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