AMD Radeon HD 7850M vs NVIDIA GeForce GTX 275 PhysX Edition

Table of Contents

Graphics Processor

GPU model Heathrow G92B
GPU variant Heathrow PRO G92-421-B1
Architecture GCN 1.0 Tesla
Foundry TSMC TSMC
Manufacturing process 28 nm 55 nm
Number of transistors 1,500 million 754 million
Die size 123 mm² 260 mm²

Mobile graphics

Release date Apr 24th, 2012
Generation London (HD 7800M)
Production End-of-life
Interface PCIe 3.0 x16
Predecessor Vancouver
Successor Solar System

Clocks

GPU clock 675 MHz 633 MHz
Memory clock 1000 MHz 4 Gbps effective 1134 MHz 2.3 Gbps effective
Shader clock 1296 MHz

Memory Configuration

Memory size 2 GB 896 MB
Memory type GDDR5 GDDR3
Memory bus width 128 bit 448 bit
Bandwidth 64.00 GB/s 127.0 GB/s

Render Configuration

Shading units 640 240
TMUs 40 80
ROPs 16 28
Compute units 10
Cache L1 16 KB (per CU)
Cache L2 256 KB 224 KB
SM count 30

Performance

Pixel rate 10.80 GPixel/s 17.72 GPixel/s
Texture rate 27.00 GTexel/s 50.64 GTexel/s
FP32 (float) performance 864.0 GFLOPS 622.1 GFLOPS
FP64 (double) performance 54.00 GFLOPS (1:16) 77.76 GFLOPS (1:8)

Dimensions & Outputs

TDP 40 W 219 W
Outputs No outputs 2x DVI
Slot width Dual-slot
Length 267 mm 10.5 inches
Suggested PSU 550 W
Power connectors 1x 6-pin + 1x 8-pin

API Support & Features

DirectX 12 (11_1) 11.1 (10_0)
OpenGL 4.6 3.3
OpenCL 1.2 1.1
Vulkan 1.2
Shader model 5.1 4.0
CUDA 1.3

Other Features

Graphics Card

Release date Feb 16th, 2010
Generation GeForce 200
Production End-of-life
Interface PCIe 2.0 x16
Reviews 61 in our database
Predecessor GeForce 9
Successor GeForce 400

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