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GPU Comparison

Side-by-side comparison of specifications and performance

Performance Comparison

ATI Radeon HD 5770

31%
31%

AMD Radeon HD 6990

326%
326%
AMD Radeon HD 6990 is approximately 295% faster

Technical Specifications

SpecificationATI Radeon HD 5770AMD Radeon HD 6990
Graphics ProcessorDifferent
Juniper
Antilles x2
CoresDifferent
800
1536 x2
TMUsDifferent
40
96 x2
ROPsDifferent
16
32 x2
Memory SizeDifferent
1024 MB
2 GB x2
Memory Type
GDDR5
GDDR5
Bus WidthDifferent
128 bit
256 bit x2

Graphics Processor

FeatureATI Radeon HD 5770AMD Radeon HD 6990
GPU NameDifferent
Juniper
Antilles
GPU VariantDifferent
Juniper XT(215-0754013)
Antilles XT(215-0807027)
ArchitectureDifferent
TeraScale 2
TeraScale 3
Foundry
TSMC
TSMC
Process Size
40 nm
40 nm
TransistorsDifferent
1,040 million
2,640 million
DensityDifferent
6.3M / mm²
6.8M / mm²
Die SizeDifferent
166 mm²
389 mm²
Chip PackageDifferent
FCBGA-962
N/A

Graphics Card

FeatureATI Radeon HD 5770AMD Radeon HD 6990
Release DateDifferent
Oct 13th, 2009
Mar 8th, 2011
GenerationDifferent
Evergreen(HD 5700)
Northern Islands(HD 6900)
PredecessorDifferent
Radeon R700
Evergreen
SuccessorDifferent
Northern Islands
Southern Islands
Production
End-of-life
End-of-life
Launch PriceDifferent
159 USD
699 USD
Bus Interface
PCIe 2.0 x16
PCIe 2.0 x16
ReviewsDifferent
142 in our database
47 in our database

Clock Speeds

FeatureATI Radeon HD 5770AMD Radeon HD 6990
GPU ClockDifferent
850 MHz
830 MHz
Memory ClockDifferent
1200 MHz4.8 Gbps effective
1250 MHz5 Gbps effective

Memory

FeatureATI Radeon HD 5770AMD Radeon HD 6990
Memory SizeDifferent
1024 MB
2 GB
Memory Type
GDDR5
GDDR5
Memory BusDifferent
128 bit
256 bit
BandwidthDifferent
76.80 GB/s
160.0 GB/s

Render Config

FeatureATI Radeon HD 5770AMD Radeon HD 6990
Shading UnitsDifferent
800
1536
TMUsDifferent
40
96
ROPsDifferent
16
32
Compute UnitsDifferent
10
24
L1 Cache
8 KB (per CU)
8 KB (per CU)
L2 CacheDifferent
256 KB
512 KB

Theoretical Performance

FeatureATI Radeon HD 5770AMD Radeon HD 6990
Pixel RateDifferent
13.60 GPixel/s
26.56 GPixel/s
Texture RateDifferent
34.00 GTexel/s
79.68 GTexel/s
FP32 (float)Different
1,360.0 GFLOPS
2.550 TFLOPS
FP64 (double)Different
N/A
637.4 GFLOPS (1:4)

Board Design

FeatureATI Radeon HD 5770AMD Radeon HD 6990
Slot Width
Dual-slot
Dual-slot
LengthDifferent
208 mm8.2 inches
310 mm12.2 inches
TDPDifferent
108 W
375 W
Suggested PSUDifferent
300 W
750 W
OutputsDifferent
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
1x DVI4x mini-DisplayPort 1.2
Power ConnectorsDifferent
1x 6-pin
2x 8-pin
Board NumberDifferent
C010
109-C20647-00
HeightDifferent
N/A
115 mm4.5 inches
WidthDifferent
N/A
40 mm1.6 inches

Graphics Features

FeatureATI Radeon HD 5770AMD Radeon HD 6990
DirectX
11.2 (11_0)
11.2 (11_0)
OpenGL
4.4
4.4
OpenCL
1.2
1.2
Vulkan
N/A
N/A
Shader Model
5.0
5.0

Comparison Summary

7
Specifications Compared
8
Feature Categories
47
Detailed Features

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