E3300 and E5200

[Daviddyer86]

E3300 Dual core Celeron at 2.5GHz, 1MB cache, 45nm tech
E5200 Pentium dual core at 2.5GHz, 2MB cache, 45nm tech

E3300 score 1,679

E5200 score 1,655


But I'm sure E5200 should be better in performance than E3300 in almost
all the tests!

So you see some of the scores are very misleading!

[David (PassMark)]

The cache size doesn't give huge advantage. Only a few percent, and this can be more than overwhelmed by other factors like the use of 32bit or 64bit.

Also as the E3300 was released about a year later than the E5200. So people will tend to be using the newer E3300 with newer and slightly faster RAM and motherboards. Plus 64bit will be more common one year later.

[Daviddyer86]

http://www.xbitlabs.com/articles/cpu/display/celeron-e3300.html

LGA775 platform:

• CPU:
  • Intel Pentium E5200 (Wolfdale, 2.5 GHz, 800 MHz FSB, 2 MB L2);
  • Intel Pentium E2220 (Allendale, 2.4 GHz, 800 MHz FSB, 1 MB L2);
  • Intel Celeron E3300 (Wolfdale, 2.5 GHz, 800 MHz FSB, 1 MB L2);
  • Intel Celeron E3200 (Wolfdale, 2.4 GHz, 800 MHz FSB, 1 MB L2);
  • Intel Celeron E1600 (Allendale, 2.4 GHz, 800 MHz FSB, 512 KB L2).
  
  
• Mainboard: ASUS P5Q Pro (LGA775, Intel P45 Express, DDR2 SDRAM).
• Memory: 2 x 2 GB, DDR2-800 SDRAM, 5-5-5-15.

[David (PassMark)]

This review just shows what I said above. The CPUs in question are very close performance wise with the difference often being just 5% or so.