AMD Phenom II X4 820 

Released August, 2009
  • 2.8 GHz
  • Quad core
5 Out of 10

I have been using this CPU for over 2 years now and it has been very reliable.
by grubby99 (May, 2012)
I tried replacing it with a PII x4 955 with C2 stepping, but these was no performance gain and temps rose significantly.
by grubby99 (May, 2012)

CPUBoss Review Our evaluation of the AMD Phenom II X4 820 among desktop CPUs (over 75W)

Performance

Benchmark performance using all cores

Phenom II X4 820
5.0
FX 6300
6.2
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Phenom II X4 820
5.0
FX 6300
6.6
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Phenom II X4 820
0.0
FX 6300
0.0
Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Phenom II X4 820
0.0
FX 6300
0.0
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Phenom II X4 820
5.6
FX 6300
6.0
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Phenom II X4 820
n.d.
FX 6300
6.5
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

5

CPUBoss Score

Combination of all six facets

Phenom II X4 820
5.0
FX 6300
5.8

Benchmarks Real world tests of the AMD Phenom II X4 820

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Phenom II X4 820
5,101
Core i5 3570K
10,311
FX 6300
7,871

GeekBench 3 (Single core) Data courtesy Primate Labs

Phenom II X4 820
1,463
FX 6300
2,053

GeekBench 3 (AES single core) Data courtesy Primate Labs

Phenom II X4 820
112,900 MB/s
Core i5 3570K
2,650,000 MB/s
FX 6300
2,290,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Phenom II X4 820
4,969
Core i5 3570K
10,832
FX 6300
7,447

GeekBench (64-bit) Data courtesy Primate Labs

Phenom II X4 820
6,338
Core i5 3570K
11,824
FX 6300
8,232

GeekBench

Phenom II X4 820
6,338
Core i5 3570K
15,009
FX 6300
9,503

PassMark Data courtesy Passmark

Phenom II X4 820
3,437
FX 6300
6,444

PassMark (Single Core)

Phenom II X4 820
981
FX 6300
1,446

Reviews Word on the street for the AMD Phenom II X4 820


9.1
Both CPUs had a max overclock of 3.6GHz on air.

Specifications Full list of technical specs

summary

Clock speed 2.8 GHz
Cores Quad core
Socket type AM3
Is unlocked No

features

Has a NX bit Yes
Has virtualization support Yes
Instruction set extensions
  1. SSE4a
  2. 3DNow!
  3. SSE2
  4. SSE
  5. MMX
  6. SSE3
Supports dynamic frequency scaling Yes

integrated graphics

GPU None

details

Architecture x86-64
Threads 4 threads
L2 cache 2 MB
L2 cache per core 0.5 MB/core
L3 cache 4 MB
L3 cache per core 1 MB/core
Manufacture process 45 nm
Max CPUs 1
Voltage range 0.9 - 1.43V
Operating temperature Unknown - 71°C

overclocking

Overclock popularity 12
Overclock review score 4.5
Overclocked clock speed 2.95 GHz
Overclocked clock speed (Water) 2.8 GHz
Overclocked clock speed (Air) 2.95 GHz

power consumption

TDP 95W
Annual home energy cost 22.89 $/year
Annual commercial energy cost 83.22 $/year
Performance per watt 1.71 pt/W
Typical power consumption 77.19W

bus

Clock speed 2,000 MHz
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