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GPU Comparison

Side-by-side comparison of specifications and performance

Performance Comparison

AMD Radeon R9 270X

82%
82%

AMD Radeon R9 285

123%
123%
AMD Radeon R9 285 is approximately 41% faster

Technical Specifications

SpecificationAMD Radeon R9 270XAMD Radeon R9 285
Graphics ProcessorDifferent
Curacao
Tonga
CoresDifferent
1280
1792
TMUsDifferent
80
112
ROPs
32
32
Memory Size
2 GB
2 GB
Memory Type
GDDR5
GDDR5
Bus Width
256 bit
256 bit

Graphics Processor

FeatureAMD Radeon R9 270XAMD Radeon R9 285
GPU NameDifferent
Curacao
Tonga
GPU VariantDifferent
Curacao XT(215-0848004)
Tonga PRO(215-0851128)
ArchitectureDifferent
GCN 1.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
TransistorsDifferent
2,800 million
5,000 million
DensityDifferent
13.2M / mm²
13.7M / mm²
Die SizeDifferent
212 mm²
366 mm²
Chip PackageDifferent
FCBGA-1737
N/A

Graphics Card

FeatureAMD Radeon R9 270XAMD Radeon R9 285
Release DateDifferent
Oct 8th, 2013
Sep 2nd, 2014
Generation
Volcanic Islands(R9 200)
Volcanic Islands(R9 200)
Predecessor
Sea Islands
Sea Islands
Successor
Pirate Islands
Pirate Islands
Production
End-of-life
End-of-life
Launch PriceDifferent
199 USD
249 USD
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
ReviewsDifferent
90 in our database
59 in our database

Clock Speeds

FeatureAMD Radeon R9 270XAMD Radeon R9 285
Base ClockDifferent
1000 MHz
N/A
Boost ClockDifferent
1050 MHz
N/A
Memory ClockDifferent
1400 MHz5.6 Gbps effective
1375 MHz5.5 Gbps effective
GPU ClockDifferent
N/A
918 MHz

Memory

FeatureAMD Radeon R9 270XAMD Radeon R9 285
Memory Size
2 GB
2 GB
Memory Type
GDDR5
GDDR5
Memory Bus
256 bit
256 bit
BandwidthDifferent
179.2 GB/s
176.0 GB/s

Render Config

FeatureAMD Radeon R9 270XAMD Radeon R9 285
Shading UnitsDifferent
1280
1792
TMUsDifferent
80
112
ROPs
32
32
Compute UnitsDifferent
20
28
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB

Theoretical Performance

FeatureAMD Radeon R9 270XAMD Radeon R9 285
Pixel RateDifferent
33.60 GPixel/s
29.38 GPixel/s
Texture RateDifferent
84.00 GTexel/s
102.8 GTexel/s
FP32 (float)Different
2.688 TFLOPS
3.290 TFLOPS
FP64 (double)Different
168.0 GFLOPS (1:16)
205.6 GFLOPS (1:16)
FP16 (half)Different
N/A
3.290 TFLOPS (1:1)

Board Design

FeatureAMD Radeon R9 270XAMD Radeon R9 285
Slot Width
Dual-slot
Dual-slot
LengthDifferent
241 mm9.5 inches
221 mm8.7 inches
Height
109 mm4.3 inches
109 mm4.3 inches
Width
36 mm1.4 inches
36 mm1.4 inches
TDPDifferent
180 W
190 W
Suggested PSU
450 W
450 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
2x 6-pin
2x 6-pin
Board NumberDifferent
C631, 109-C63257-00A_02, 109-C63257-12_02
C766

Graphics Features

FeatureAMD Radeon R9 270XAMD 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
50
Detailed Features

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