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GPU Comparison

Side-by-side comparison of specifications and performance

Performance Comparison

AMD Radeon HD 7850

44%
44%

AMD Radeon R9 390

250%
250%
AMD Radeon R9 390 is approximately 206% faster

Technical Specifications

SpecificationAMD Radeon HD 7850AMD Radeon R9 390
Graphics ProcessorDifferent
Pitcairn
Grenada
CoresDifferent
1024
2560
TMUsDifferent
64
160
ROPsDifferent
32
64
Memory SizeDifferent
2 GB
8 GB
Memory Type
GDDR5
GDDR5
Bus WidthDifferent
256 bit
512 bit

Graphics Processor

FeatureAMD Radeon HD 7850AMD Radeon R9 390
GPU NameDifferent
Pitcairn
Grenada
GPU VariantDifferent
Pitcairn PRO(215-0828062)
Grenada PRO(215-0880030)
ArchitectureDifferent
GCN 1.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
TransistorsDifferent
2,800 million
6,200 million
DensityDifferent
13.2M / mm²
14.2M / mm²
Die SizeDifferent
212 mm²
438 mm²
Chip PackageDifferent
FCBGA-1737
N/A

Graphics Card

FeatureAMD Radeon HD 7850AMD Radeon R9 390
Release DateDifferent
Mar 5th, 2012
Jun 18th, 2015
GenerationDifferent
Southern Islands(HD 7800)
Pirate Islands(R9 300)
PredecessorDifferent
Northern Islands
Volcanic Islands
SuccessorDifferent
Sea Islands
Arctic Islands
Production
End-of-life
End-of-life
Launch PriceDifferent
249 USD
329 USD
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
ReviewsDifferent
71 in our database
35 in our database

Clock Speeds

FeatureAMD Radeon HD 7850AMD Radeon R9 390
GPU ClockDifferent
860 MHz
1000 MHz
Memory ClockDifferent
1200 MHz4.8 Gbps effective
1500 MHz6 Gbps effective

Memory

FeatureAMD Radeon HD 7850AMD Radeon R9 390
Memory SizeDifferent
2 GB
8 GB
Memory Type
GDDR5
GDDR5
Memory BusDifferent
256 bit
512 bit
BandwidthDifferent
153.6 GB/s
384.0 GB/s

Render Config

FeatureAMD Radeon HD 7850AMD Radeon R9 390
Shading UnitsDifferent
1024
2560
TMUsDifferent
64
160
ROPsDifferent
32
64
Compute UnitsDifferent
16
40
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 CacheDifferent
512 KB
1024 KB

Theoretical Performance

FeatureAMD Radeon HD 7850AMD Radeon R9 390
Pixel RateDifferent
27.52 GPixel/s
64.00 GPixel/s
Texture RateDifferent
55.04 GTexel/s
160.0 GTexel/s
FP32 (float)Different
1.761 TFLOPS
5.120 TFLOPS
FP64 (double)Different
110.1 GFLOPS (1:16)
640.0 GFLOPS (1:8)

Board Design

FeatureAMD Radeon HD 7850AMD Radeon R9 390
Slot Width
Dual-slot
Dual-slot
LengthDifferent
210 mm8.3 inches
275 mm10.8 inches
TDPDifferent
130 W
275 W
Suggested PSUDifferent
300 W
600 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 6-pin + 1x 8-pin
Board NumberDifferent
109-C40147-00, 109-C40337-00A
109-C67157-00_02, C679
HeightDifferent
N/A
109 mm4.3 inches
WidthDifferent
N/A
36 mm1.4 inches

Graphics Features

FeatureAMD Radeon HD 7850AMD Radeon R9 390
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
47
Detailed Features

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