ATI Radeon HD 3870 vs NVIDIA GeForce 8800 GTX

Table of Contents

Graphics Processor

GPU model RV670 G80
GPU variant RV670 XT (215-0708005) G80-300-A2
Architecture TeraScale Tesla
Foundry TSMC TSMC
Manufacturing process 55 nm 90 nm
Number of transistors 666 million 681 million
Die size 192 mm² 484 mm²

Graphics Card

Release date Nov 19th, 2007 Nov 8th, 2006
Generation Radeon R600 GeForce 8
Production End-of-life End-of-life
Launch price 269 USD 599 USD
Interface PCIe 2.0 x16 PCIe 1.0 x16
Reviews 80 in our database 73 in our database
Predecessor Radeon R500 PCIe GeForce 7 PCIe
Successor Radeon R700 GeForce 9

Clocks

GPU clock 777 MHz 576 MHz
Memory clock 1126 MHz 2.3 Gbps effective 900 MHz 1800 Mbps effective
Shader clock 1350 MHz

Memory Configuration

Memory size 512 MB 768 MB
Memory type GDDR4 GDDR3
Memory bus width 256 bit 384 bit
Bandwidth 72.06 GB/s 86.40 GB/s

Render Configuration

Shading units 320 128
TMUs 16 32
ROPs 16 24
Compute units 4
Cache L2 256 KB 96 KB
SM count 16

Performance

Pixel rate 12.43 GPixel/s 13.82 GPixel/s
Texture rate 12.43 GTexel/s 36.86 GTexel/s
FP32 (float) performance 497.3 GFLOPS 345.6 GFLOPS
FP64 (double) performance 99.46 GFLOPS (1:5)

Dimensions & Outputs

Slot width Dual-slot Dual-slot
Length 241 mm 9.5 inches 270 mm 10.6 inches
TDP 106 W 155 W
Suggested PSU 300 W 450 W
Outputs 2x DVI1x S-Video 2x DVI1x S-Video
Power connectors 1x 6-pin 2x 6-pin
Board number B339 P355

API Support & Features

DirectX 10.1 (10_1) 11.1 (10_0)
OpenGL 3.3 (full) 4.0 (partial) 3.3
OpenCL 1.1 (1.0)
Vulkan
Shader model 4.1 4.0
CUDA 1.0

Other Features

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