GPUs

AMD Radeon HD 8670 vs AMD Radeon HD 8870 Full Specs

384 Shaders
1GHz
1,280 Shaders
1GHz
2GB GDDR573.6GB/s
2GB GDDR5153.6GB/s
··
768 GFLOPS
··
2.56 TFLOPS
Form Factor
PCIe Card
Form Factor
PCIe Card
TDP
86W
TDP
150W
Power Connectors
-
Power Connectors
2x 6-Pin

Radeon HD 8670Radeon HD 8670768 GFLOPSFP32
x1
Radeon HD 8870Radeon HD 88702.56 TFLOPSFP32
x3.33

Clock Speed
··
Clock Speed
··
Peak OPS
768 GFLOPSFP32
Peak OPS
2.56 TFLOPSFP32
FP32
768 GFLOPS
FP32
2.56 TFLOPS
FP64
48 GFLOPS
FP64
160 GFLOPS
Pixel Rate
8 GPixel/s
Pixel Rate
32 GPixel/s
Texture Rate
24 GTexel/s
Texture Rate
80 GTexel/s

Shaders
384 Shaders
Shaders
1,280 Shaders
TMUs
24 TMUs
TMUs
80 TMUs
ROPs
8 ROPs
ROPs
32 ROPs
CUs
6 CUs
CUs
20 CUs

Boost Clock
1GHz
Boost Clock
1GHz

L2 Cache
256KB shared
L2 Cache
512KB shared

2GB GDDR5
2GB GDDR5
Memory Bus
128-bit
Memory Bus
256-bit
Memory Speed
4.6GT/s
Memory Speed
4.8GT/s
Memory Bandwidth
73.6GB/s
Memory Bandwidth
153.6GB/s

TDP
86W
TDP
150W

Multi-Monitor
3
Multi-Monitor
3

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

Encoder Model
VCE 1.0
Encoder Model
VCE 1.0

Decoder Model
UVD 4.0
Decoder Model
UVD 4.0

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

Manufacturer
Manufacturer
Chip Designer
Chip Designer
Architecture
Architecture
Family
Family
Branding
Radeon 2013 branding
Branding
Radeon 2013 branding
Codename
Oland
Codename
Pitcairn
Chip Variant
Oland XT
Chip Variant
Pitcairn Pro
Market Segment
Desktop
Market Segment
Desktop
Release Date
Jan 8, 2013
Release Date
Jan 8, 2013

Foundry
TSMC
Foundry
TSMC
Fabrication Node
28nm
Fabrication Node
28nm
Die Size
77mm²
Die Size
212mm²
Transistor Count
950 Million
Transistor Count
2.8 Billion
Transistor Density
12.34 MTr/mm²
Transistor Density
13.21 MTr/mm²

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