AMD Radeon HD 8450 vs AMD Radeon HD 8870 Full Specs

Summary

160 Shaders 625MHz	1,280 Shaders 1GHz
512MB DDR38.5GB/s	2GB GDDR5153.6GB/s
Peak·FP32·FP16 200 GFLOPS	Peak·FP32·FP16 2.56 TFLOPS
Form Factor PCIe Card	Form Factor PCIe Card
TDP 18W	TDP 150W
Power Connectors -	Power Connectors 2x 6-Pin

Highlights

Peak OPS

Peak OPS FP32 FP64 Memory Bandwidth TDP

Radeon HD 8450200 GFLOPSFP32

x1

Radeon HD 88702.56 TFLOPSFP32

x12.80

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Theoretical Performance

Clock Speed625MHz UC·Boost·OC	Clock Speed1000MHz UC·Boost·OC
Peak OPS 200 GFLOPSFP32	Peak OPS 2.56 TFLOPSFP32
FP32 200 GFLOPS	FP32 2.56 TFLOPS
-	FP64 160 GFLOPS
Pixel Rate 2.5 GPixel/s	Pixel Rate 32 GPixel/s
Texture Rate 5 GTexel/s	Texture Rate 80 GTexel/s

Core Config

Shaders 160 Shaders	Shaders 1,280 Shaders
TMUs 8 TMUs	TMUs 80 TMUs
ROPs 4 ROPs	ROPs 32 ROPs
CUs 2 CUs	CUs 20 CUs

Clocks

Boost Clock 625MHz

Boost Clock 1GHz

Cache

L2 Cache 128KB shared

L2 Cache 512KB shared

Memory

512MB DDR3	2GB GDDR5
Memory Bus 64-bit	Memory Bus 256-bit
Memory Speed 1.1GT/s	Memory Speed 4.8GT/s
Memory Bandwidth 8.5GB/s	Memory Bandwidth 153.6GB/s

Power & Thermals

TDP 18W

TDP 150W

Video Output

Multi-Monitor 2

Multi-Monitor 3

Ports

-	2x Mini DisplayPort 1.2
-	1x HDMI 1.4
1x HDMI 1.3	-
1x DVI-I Dual-Link	1x DVI-I Dual-Link
1x VGA	-

Encoder

-	Encoder Model VCE 1.0

Decoder

Decoder Model UVD 3.0

Decoder Model UVD 4.0

Card

Form Factor PCIe Card	Form Factor PCIe Card
PCIe 1-Slots	PCIe 2-Slots
-	Height 111 mm (4.37") Width 241 mm (9.49") Depth 37 mm (1.46")
Cooling Open-Air 1x Fan	Cooling Blower 1x Fan
Power Connectors -	Power Connectors 2x 6-Pin

Chip

Manufacturer AMD	Manufacturer AMD
Chip Designer AMD	Chip Designer AMD
Architecture TeraScale 2	Architecture GCN 1
Family Radeon HD 8000	Family Radeon HD 8000
Branding	Branding
Codename Caicos	Codename Pitcairn
Chip Variant Caicos	Chip Variant Pitcairn Pro
Market Segment Desktop	Market Segment Desktop
Release Date Jan 8, 2013	Release Date Jan 8, 2013

Fabrication

Foundry TSMC	Foundry TSMC
Fabrication Node 40nm	Fabrication Node 28nm
Die Size 67mm²	Die Size 212mm²
Transistor Count 370 Million	Transistor Count 2.8 Billion
Transistor Density 5.52 MTr/mm²	Transistor Density 13.21 MTr/mm²

Images

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