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GPU Comparison

Side-by-side comparison of specifications and performance

Performance Comparison

AMD Radeon R9 285

88%
88%

AMD Radeon HD 7970 GHz Edition

114%
114%
AMD Radeon HD 7970 GHz Edition is approximately 26% faster

Technical Specifications

SpecificationAMD Radeon R9 285AMD Radeon HD 7970 GHz Edition
Graphics ProcessorDifferent
Tonga
Tahiti
CoresDifferent
1792
2048
TMUsDifferent
112
128
ROPs
32
32
Memory SizeDifferent
2 GB
3 GB
Memory Type
GDDR5
GDDR5
Bus WidthDifferent
256 bit
384 bit

Graphics Processor

FeatureAMD Radeon R9 285AMD Radeon HD 7970 GHz Edition
GPU NameDifferent
Tonga
Tahiti
GPU VariantDifferent
Tonga PRO(215-0851128)
Tahiti XT2(215-0821065)
ArchitectureDifferent
GCN 3.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
TransistorsDifferent
5,000 million
4,313 million
DensityDifferent
13.7M / mm²
12.3M / mm²
Die SizeDifferent
366 mm²
352 mm²

Graphics Card

FeatureAMD Radeon R9 285AMD Radeon HD 7970 GHz Edition
Release DateDifferent
Sep 2nd, 2014
Jun 22nd, 2012
GenerationDifferent
Volcanic Islands(R9 200)
Southern Islands(HD 7900)
PredecessorDifferent
Sea Islands
Northern Islands
SuccessorDifferent
Pirate Islands
Sea Islands
Production
End-of-life
End-of-life
Launch PriceDifferent
249 USD
499 USD
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
ReviewsDifferent
59 in our database
191 in our database

Clock Speeds

FeatureAMD Radeon R9 285AMD Radeon HD 7970 GHz Edition
GPU ClockDifferent
918 MHz
N/A
Memory ClockDifferent
1375 MHz5.5 Gbps effective
1500 MHz6 Gbps effective
Base ClockDifferent
N/A
1000 MHz
Boost ClockDifferent
N/A
1050 MHz

Memory

FeatureAMD Radeon R9 285AMD Radeon HD 7970 GHz Edition
Memory SizeDifferent
2 GB
3 GB
Memory Type
GDDR5
GDDR5
Memory BusDifferent
256 bit
384 bit
BandwidthDifferent
176.0 GB/s
288.0 GB/s

Render Config

FeatureAMD Radeon R9 285AMD Radeon HD 7970 GHz Edition
Shading UnitsDifferent
1792
2048
TMUsDifferent
112
128
ROPs
32
32
Compute UnitsDifferent
28
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 CacheDifferent
512 KB
768 KB

Theoretical Performance

FeatureAMD Radeon R9 285AMD Radeon HD 7970 GHz Edition
Pixel RateDifferent
29.38 GPixel/s
33.60 GPixel/s
Texture RateDifferent
102.8 GTexel/s
134.4 GTexel/s
FP16 (half)Different
3.290 TFLOPS (1:1)
N/A
FP32 (float)Different
3.290 TFLOPS
4.301 TFLOPS
FP64 (double)Different
205.6 GFLOPS (1:16)
1,075.2 GFLOPS (1:4)

Board Design

FeatureAMD Radeon R9 285AMD Radeon HD 7970 GHz Edition
Slot Width
Dual-slot
Dual-slot
LengthDifferent
221 mm8.7 inches
275 mm10.8 inches
HeightDifferent
109 mm4.3 inches
111 mm4.4 inches
WidthDifferent
36 mm1.4 inches
38 mm1.5 inches
TDPDifferent
190 W
300 W
Suggested PSUDifferent
450 W
700 W
OutputsDifferent
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power ConnectorsDifferent
2x 6-pin
1x 6-pin + 1x 8-pin
Board NumberDifferent
C766
109-C38637-00

Graphics Features

FeatureAMD Radeon R9 285AMD Radeon HD 7970 GHz Edition
DirectXDifferent
12 (12_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCLDifferent
2.1
2.1 (1.2)
Vulkan
1.2.170
1.2.170
Shader ModelDifferent
6.5
6.5 (5.1)

Comparison Summary

7
Specifications Compared
8
Feature Categories
49
Detailed Features

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