ATI Radeon HD 3850 vs NVIDIA GeForce GT 620 OEM

Table of Contents

Graphics Processor

GPU model RV670 GF119
GPU variant RV670 PRO (215-0708003)
Architecture TeraScale Fermi 2.0
Foundry TSMC TSMC
Manufacturing process 55 nm 40 nm
Number of transistors 666 million 292 million
Die size 192 mm² 79 mm²

Graphics Card

Release date Nov 19th, 2007 Apr 2nd, 2012
Generation Radeon R600 GeForce 600
Production End-of-life End-of-life
Launch price 179 USD
Interface PCIe 2.0 x16 PCIe 2.0 x16
Reviews 71 in our database
Predecessor Radeon R500 PCIe GeForce 500
Successor Radeon R700 GeForce 700

Clocks

GPU clock 668 MHz 810 MHz
Memory clock 830 MHz 1660 Mbps effective 898 MHz 1796 Mbps effective
Shader clock 1620 MHz

Memory Configuration

Memory size 512 MB 512 MB
Memory type GDDR3 DDR3
Memory bus width 256 bit 64 bit
Bandwidth 53.12 GB/s 14.37 GB/s

Render Configuration

Shading units 320 48
TMUs 16 8
ROPs 16 4
Compute units 4
Cache L2 256 KB 128 KB
SM count 1
Cache L1 64 KB (per SM)

Performance

Pixel rate 10.69 GPixel/s 1.620 GPixel/s
Texture rate 10.69 GTexel/s 6.480 GTexel/s
FP32 (float) performance 427.5 GFLOPS 155.5 GFLOPS
FP64 (double) performance 85.50 GFLOPS (1:5) 12.96 GFLOPS (1:12)

Dimensions & Outputs

Slot width Single-slot Single-slot
Length 208 mm 8.2 inches 145 mm 5.7 inches
TDP 75 W 30 W
Suggested PSU 250 W 200 W
Outputs 2x DVI1x S-Video 1x DVI1x HDMI1x VGA
Power connectors 1x 6-pin None
Board number B340, B400 P1310

API Support & Features

DirectX 10.1 (10_1) 12 (11_0)
OpenGL 3.3 (full) 4.0 (partial) 4.6
OpenCL 1.1
Vulkan
Shader model 4.1 5.1
CUDA 2.1

Other Features

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