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GPU Comparison

Side-by-side comparison of specifications and performance

Performance Comparison

AMD Radeon HD 7850

60%
60%

AMD Radeon HD 6990

167%
167%
AMD Radeon HD 6990 is approximately 107% faster

Technical Specifications

SpecificationAMD Radeon HD 7850AMD Radeon HD 6990
Graphics ProcessorDifferent
Pitcairn
Antilles x2
CoresDifferent
1024
1536 x2
TMUsDifferent
64
96 x2
ROPsDifferent
32
32 x2
Memory SizeDifferent
2 GB
2 GB x2
Memory Type
GDDR5
GDDR5
Bus WidthDifferent
256 bit
256 bit x2

Graphics Processor

FeatureAMD Radeon HD 7850AMD Radeon HD 6990
GPU NameDifferent
Pitcairn
Antilles
GPU VariantDifferent
Pitcairn PRO(215-0828062)
Antilles XT(215-0807027)
ArchitectureDifferent
GCN 1.0
TeraScale 3
Foundry
TSMC
TSMC
Process SizeDifferent
28 nm
40 nm
TransistorsDifferent
2,800 million
2,640 million
DensityDifferent
13.2M / mm²
6.8M / mm²
Die SizeDifferent
212 mm²
389 mm²
Chip PackageDifferent
FCBGA-1737
N/A

Graphics Card

FeatureAMD Radeon HD 7850AMD Radeon HD 6990
Release DateDifferent
Mar 5th, 2012
Mar 8th, 2011
GenerationDifferent
Southern Islands(HD 7800)
Northern Islands(HD 6900)
PredecessorDifferent
Northern Islands
Evergreen
SuccessorDifferent
Sea Islands
Southern Islands
Production
End-of-life
End-of-life
Launch PriceDifferent
249 USD
699 USD
Bus InterfaceDifferent
PCIe 3.0 x16
PCIe 2.0 x16
ReviewsDifferent
71 in our database
47 in our database

Clock Speeds

FeatureAMD Radeon HD 7850AMD Radeon HD 6990
GPU ClockDifferent
860 MHz
830 MHz
Memory ClockDifferent
1200 MHz4.8 Gbps effective
1250 MHz5 Gbps effective

Memory

FeatureAMD Radeon HD 7850AMD Radeon HD 6990
Memory Size
2 GB
2 GB
Memory Type
GDDR5
GDDR5
Memory Bus
256 bit
256 bit
BandwidthDifferent
153.6 GB/s
160.0 GB/s

Render Config

FeatureAMD Radeon HD 7850AMD Radeon HD 6990
Shading UnitsDifferent
1024
1536
TMUsDifferent
64
96
ROPs
32
32
Compute UnitsDifferent
16
24
L1 CacheDifferent
16 KB (per CU)
8 KB (per CU)
L2 Cache
512 KB
512 KB

Theoretical Performance

FeatureAMD Radeon HD 7850AMD Radeon HD 6990
Pixel RateDifferent
27.52 GPixel/s
26.56 GPixel/s
Texture RateDifferent
55.04 GTexel/s
79.68 GTexel/s
FP32 (float)Different
1.761 TFLOPS
2.550 TFLOPS
FP64 (double)Different
110.1 GFLOPS (1:16)
637.4 GFLOPS (1:4)

Board Design

FeatureAMD Radeon HD 7850AMD Radeon HD 6990
Slot Width
Dual-slot
Dual-slot
LengthDifferent
210 mm8.3 inches
310 mm12.2 inches
TDPDifferent
130 W
375 W
Suggested PSUDifferent
300 W
750 W
OutputsDifferent
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
1x DVI4x mini-DisplayPort 1.2
Power ConnectorsDifferent
1x 6-pin
2x 8-pin
Board NumberDifferent
109-C40147-00, 109-C40337-00A
109-C20647-00
HeightDifferent
N/A
115 mm4.5 inches
WidthDifferent
N/A
40 mm1.6 inches

Graphics Features

FeatureAMD Radeon HD 7850AMD Radeon HD 6990
DirectXDifferent
12 (11_1)
11.2 (11_0)
OpenGLDifferent
4.6
4.4
OpenCLDifferent
2.1 (1.2)
1.2
VulkanDifferent
1.2.170
N/A
Shader ModelDifferent
6.5 (5.1)
5.0

Comparison Summary

7
Specifications Compared
8
Feature Categories
47
Detailed Features

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