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GPU Comparison

Side-by-side comparison of specifications and performance

Performance Comparison

AMD Radeon HD 7970 GHz Edition

114%
114%

AMD Radeon R9 285

88%
88%
AMD Radeon HD 7970 GHz Edition is approximately 26% faster

Technical Specifications

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

Graphics Processor

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

Graphics Card

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

Clock Speeds

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

Memory

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

Render Config

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

Theoretical Performance

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

Board Design

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

Graphics Features

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

Comparison Summary

7
Specifications Compared
8
Feature Categories
49
Detailed Features

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