ATI Radeon HD 3850 X2 vs NVIDIA GeForce 9800 GT Green Full Specs

Summary

640 Shaders 668MHz	112 Shaders 550MHz
1048MB GDDR3106GB/s	524MB GDDR344.8GB/s
Peak·FP32·FP16 855 GFLOPS	Peak·FP32·FP16 308 GFLOPS
Form Factor PCIe Card	Form Factor PCIe Card
TDP 140W	TDP 75W
Power Connectors 1x 8-Pin 1x 6-Pin	Power Connectors - 1x 6-Pin

Highlights

Peak OPS

Peak OPS FP32 FP64 Memory Bandwidth TDP

Radeon HD 3850 X2855 GFLOPSFP32 (2x 427.5 GFLOPS)

x2.78

GeForce 9800 GT Green308 GFLOPSFP32

x1

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Theoretical Performance

Clock Speed668MHz UC·Boost·OC	Clock Speed550MHz UC·Boost·OC
Peak OPS 855 GFLOPSFP32	Peak OPS 308 GFLOPSFP32
FP32 855 GFLOPS	FP32 308 GFLOPS
FP64 171 GFLOPS	-
Pixel Rate 10.7 GPixel/s	Pixel Rate 22 GPixel/s
Texture Rate 10.7 GTexel/s	Texture Rate 77 GTexel/s

Core Config

Shaders 640 Shaders	Shaders 112 Shaders
TMUs 32 TMUs	TMUs 56 TMUs
ROPs 32 ROPs	ROPs 16 ROPs
CUs 8 CUs	SMs 14 SMs

Clocks

Boost Clock 668MHz	Boost Clock 550MHz
Shader Clock -	Shader Clock 1.38GHz

Cache

L2 Cache 256KB shared

L2 Cache 64KB shared

Memory

1048MB GDDR3	524MB GDDR3
Memory Bus 256-bit	Memory Bus 256-bit
Memory Speed 1.7GT/s	Memory Speed 1.4GT/s
Memory Bandwidth 106GB/s	Memory Bandwidth 44.8GB/s

Power & Thermals

TDP 140W

TDP 75W

Video Output

Multi-Monitor 2

Multi-Monitor 2

Ports

2x DVI-I Dual-Link	2x DVI-I Dual-Link
1x S-Video	1x S-Video

Decoder

Decoder Model UVD 1.0

Decoder Model VP2

Card

Form Factor PCIe Card	Form Factor PCIe Card
PCIe 2-Slots	PCIe 1-Slots
-	Height 111 mm (4.37") Width 229 mm (9.02") Depth 20 mm (0.79")
Cooling Open-Air 1x Fan	Cooling Blower 1x Fan
Power Connectors 1x 8-Pin, 1x 6-Pin	Power Connectors 1x 6-Pin

Chip

Manufacturer ATI	Manufacturer NVIDIA
Chip Designer ATI	Chip Designer NVIDIA
Architecture TeraScale 1	Architecture Tesla
Family Radeon HD 3000	Family GeForce 9000
Branding	Branding
Codename Boom	Codename NV92
Chip Variant RV670 Pro	Chip Variant -
Market Segment Desktop	Market Segment Desktop
Release Date Apr 4, 2008	Release Date Mar 10, 2009

Fabrication

Foundry TSMC	Foundry TSMC
Fabrication Node 55nm	Fabrication Node 65nm
Die Size 192mm²	Die Size 324mm²
Transistor Count 666 Million	Transistor Count 754 Million
Transistor Density 3.47 MTr/mm²	Transistor Density 2.33 MTr/mm²

Images

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