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GPU Comparison

Side-by-side comparison of specifications and performance

Performance Comparison

AMD Radeon R9 280X

1386%
1386%

AMD Radeon HD 6450

7%
7%
AMD Radeon R9 280X is approximately 1379% faster

Technical Specifications

SpecificationAMD Radeon R9 280XAMD Radeon HD 6450
Graphics ProcessorDifferent
Tahiti
Caicos
CoresDifferent
2048
160
TMUsDifferent
128
8
ROPsDifferent
32
4
Memory SizeDifferent
3 GB
512 MB
Memory TypeDifferent
GDDR5
GDDR3
Bus WidthDifferent
384 bit
64 bit

Graphics Processor

FeatureAMD Radeon R9 280XAMD Radeon HD 6450
GPU NameDifferent
Tahiti
Caicos
GPU VariantDifferent
Tahiti XTL(215-0821065)
Caicos PRO
ArchitectureDifferent
GCN 1.0
TeraScale 2
Foundry
TSMC
TSMC
Process SizeDifferent
28 nm
40 nm
TransistorsDifferent
4,313 million
370 million
DensityDifferent
12.3M / mm²
5.5M / mm²
Die SizeDifferent
352 mm²
67 mm²
Chip PackageDifferent
N/A
FCBGA-631

Graphics Card

FeatureAMD Radeon R9 280XAMD Radeon HD 6450
Release DateDifferent
Oct 8th, 2013
Apr 7th, 2011
GenerationDifferent
Volcanic Islands(R9 200)
Northern Islands(HD 6400)
PredecessorDifferent
Sea Islands
Evergreen
SuccessorDifferent
Pirate Islands
Southern Islands
Production
End-of-life
End-of-life
Launch PriceDifferent
299 USD
55 USD
Bus InterfaceDifferent
PCIe 3.0 x16
PCIe 2.0 x16
ReviewsDifferent
105 in our database
14 in our database

Clock Speeds

FeatureAMD Radeon R9 280XAMD Radeon HD 6450
Base ClockDifferent
850 MHz
N/A
Boost ClockDifferent
1000 MHz
N/A
Memory ClockDifferent
1500 MHz6 Gbps effective
500 MHz1000 Mbps effective
GPU ClockDifferent
N/A
625 MHz

Memory

FeatureAMD Radeon R9 280XAMD Radeon HD 6450
Memory SizeDifferent
3 GB
512 MB
Memory TypeDifferent
GDDR5
GDDR3
Memory BusDifferent
384 bit
64 bit
BandwidthDifferent
288.0 GB/s
8.000 GB/s

Render Config

FeatureAMD Radeon R9 280XAMD Radeon HD 6450
Shading UnitsDifferent
2048
160
TMUsDifferent
128
8
ROPsDifferent
32
4
Compute UnitsDifferent
32
2
L1 CacheDifferent
16 KB (per CU)
8 KB (per CU)
L2 CacheDifferent
768 KB
128 KB

Theoretical Performance

FeatureAMD Radeon R9 280XAMD Radeon HD 6450
Pixel RateDifferent
32.00 GPixel/s
2.500 GPixel/s
Texture RateDifferent
128.0 GTexel/s
5.000 GTexel/s
FP32 (float)Different
4.096 TFLOPS
200.0 GFLOPS
FP64 (double)Different
1,024.0 GFLOPS (1:4)
N/A

Board Design

FeatureAMD Radeon R9 280XAMD Radeon HD 6450
Slot WidthDifferent
Dual-slot
Single-slot
LengthDifferent
275 mm10.8 inches
168 mm6.6 inches
HeightDifferent
109 mm4.3 inches
N/A
WidthDifferent
36 mm1.4 inches
N/A
TDPDifferent
250 W
18 W
Suggested PSUDifferent
600 W
200 W
OutputsDifferent
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x DVI1x HDMI 1.3a1x VGA
Power ConnectorsDifferent
1x 6-pin + 1x 8-pin
None
Board NumberDifferent
C386
109-C26037-00A

Graphics Features

FeatureAMD Radeon R9 280XAMD Radeon HD 6450
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
49
Detailed Features

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