CPUBoss Review Our evaluation of 805 vs 2800+ among desktop CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

No winner declared

Too close to call

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VS

Differences What are the advantages of each

Front view of Intel Pentium D 805

Reasons to consider the
Intel Pentium D 805

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Much more l2 cache 2 MB vs 0.5 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much higher clock speed 2.66 GHz vs 1.6 GHz More than 65% higher clock speed
More advanced architecture x86-64 vs x86 A 64-bit architecture allows more RAM to be installed and accessed by the processor
More cores 2 vs 1 Twice as many cores; run more applications at once
More threads 2 vs 1 Twice as many threads
Much better overclocked clock speed (Air) 3.5 GHz vs 2.36 GHz Around 50% better overclocked clock speed (Air)
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much better overclocked clock speed (Water) 2.66 GHz vs 1.8 GHz Around 50% better overclocked clock speed (Water)
Front view of AMD Sempron 2800+

Reasons to consider the
AMD Sempron 2800+

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Supports dynamic frequency scaling Yes vs No Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed
Much lower typical power consumption 50.38W vs 77.19W Around 35% lower typical power consumption
Much higher Maximum operating temperature 70 °C vs 64.1 °C Around 10% higher Maximum operating temperature
Much lower annual home energy cost 14.94 $/year vs 22.89 $/year Around 35% lower annual home energy cost
Much lower annual commercial energy cost 54.31 $/year vs 83.22 $/year Around 35% lower annual commercial energy cost

Benchmarks Real world tests of Pentium D 805 vs Sempron 2800+

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Pentium D 805
95,000 MB/s
Sempron 2800+
43.2 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Pentium D 805  vs
Sempron 2800+ 
Clock speed 2.66 GHz 1.6 GHz
Cores Dual core Single core
Socket type
LGA 775
754
AM2
462

features

Has a NX bit Yes Yes
Has virtualization support No No
Instruction set extensions
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling No Yes

power consumption

TDP 95W 62W
Annual home energy cost 22.89 $/year 14.94 $/year
Annual commercial energy cost 83.22 $/year 54.31 $/year
Performance per watt 0.71 pt/W 0.44 pt/W
Typical power consumption 77.19W 50.38W

details

Pentium D 805  vs
Sempron 2800+ 
Architecture x86-64 x86
Threads 2 1
L2 cache 2 MB 0.5 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 90 nm 90 nm
Max CPUs 1 1
Operating temperature Unknown - 64.1°C Unknown - 70°C

overclocking

Overclocked clock speed 3.5 GHz 2.36 GHz
Overclocked clock speed (Water) 2.66 GHz 1.8 GHz
PassMark (Overclocked) 883.9 543.6
Overclocked clock speed (Air) 3.5 GHz 2.36 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

bus

Clock speed 533 MHz 200 MHz
Intel Pentium D 805
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AMD Sempron 2800+
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