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GPU Comparison

Side-by-side comparison of specifications and performance

Performance Comparison

AMD Radeon HD 7850

66%
66%

AMD Radeon R9 285

152%
152%
AMD Radeon R9 285 is approximately 86% faster

Technical Specifications

SpecificationAMD Radeon HD 7850AMD Radeon R9 285
Graphics ProcessorDifferent
Pitcairn
Tonga
CoresDifferent
1024
1792
TMUsDifferent
64
112
ROPs
32
32
Memory Size
2 GB
2 GB
Memory Type
GDDR5
GDDR5
Bus Width
256 bit
256 bit

Graphics Processor

FeatureAMD Radeon HD 7850AMD Radeon R9 285
GPU NameDifferent
Pitcairn
Tonga
GPU VariantDifferent
Pitcairn PRO(215-0828062)
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 HD 7850AMD Radeon R9 285
Release DateDifferent
Mar 5th, 2012
Sep 2nd, 2014
GenerationDifferent
Southern Islands(HD 7800)
Volcanic Islands(R9 200)
PredecessorDifferent
Northern Islands
Sea Islands
SuccessorDifferent
Sea Islands
Pirate Islands
Production
End-of-life
End-of-life
Launch Price
249 USD
249 USD
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
ReviewsDifferent
71 in our database
59 in our database

Clock Speeds

FeatureAMD Radeon HD 7850AMD Radeon R9 285
GPU ClockDifferent
860 MHz
918 MHz
Memory ClockDifferent
1200 MHz4.8 Gbps effective
1375 MHz5.5 Gbps effective

Memory

FeatureAMD Radeon HD 7850AMD Radeon R9 285
Memory Size
2 GB
2 GB
Memory Type
GDDR5
GDDR5
Memory Bus
256 bit
256 bit
BandwidthDifferent
153.6 GB/s
176.0 GB/s

Render Config

FeatureAMD Radeon HD 7850AMD Radeon R9 285
Shading UnitsDifferent
1024
1792
TMUsDifferent
64
112
ROPs
32
32
Compute UnitsDifferent
16
28
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB

Theoretical Performance

FeatureAMD Radeon HD 7850AMD Radeon R9 285
Pixel RateDifferent
27.52 GPixel/s
29.38 GPixel/s
Texture RateDifferent
55.04 GTexel/s
102.8 GTexel/s
FP32 (float)Different
1.761 TFLOPS
3.290 TFLOPS
FP64 (double)Different
110.1 GFLOPS (1:16)
205.6 GFLOPS (1:16)
FP16 (half)Different
N/A
3.290 TFLOPS (1:1)

Board Design

FeatureAMD Radeon HD 7850AMD Radeon R9 285
Slot Width
Dual-slot
Dual-slot
LengthDifferent
210 mm8.3 inches
221 mm8.7 inches
TDPDifferent
130 W
190 W
Suggested PSUDifferent
300 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
2x 6-pin
Board NumberDifferent
109-C40147-00, 109-C40337-00A
C766
HeightDifferent
N/A
109 mm4.3 inches
WidthDifferent
N/A
36 mm1.4 inches

Graphics Features

FeatureAMD Radeon HD 7850AMD 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
48
Detailed Features

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