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Question Q6600 vs Q8400

JackFive

Great
Aug 16, 2019
133
9
85
0
Hi,
Well kinda old cpus completely out of date and luck they both aged well.
Therefore im asking if i should replace my q6600 with a q8400 because im getting it for free from my friend.
So should i change it or not because i've heard cpu cache help it ...8vs4mb
or will it boost some fps in games like watch dogs 2 csgo battlefield 1 farcry 5 and some other old games ?
Kindly help me decide which one would be fine.
Thanks! :)
I've a 1050 2gb.
Note:I dont have money for PCs ATM..so please dont tell me to go for something new.
 

Mr.Spock

Prominent
Dec 8, 2019
590
62
590
48
It's a better CPU, more efficient and better clock rate & FSB (unless you did the BCLK mod on the Q6600)

remember it being a boost over the Xeon 3220 (Q6600 equiv)


Hi,
Well kinda old cpus completely out of date and luck they both aged well.
Therefore im asking if i should replace my q6600 with a q8400 because im getting it for free from my friend.
So should i change it or not because i've heard cpu cache help it ...8vs4mb
or will it boost some fps in games like watch dogs 2 csgo battlefield 1 farcry 5 and some other old games ?
Kindly help me decide which one would be fine.
Thanks! :)
I've a 1050 2gb.
Note:I dont have money for PCs ATM..so please dont tell me to go for something new.
 
Last edited:
Reactions: JackFive

thekillerx10

Commendable
Apr 12, 2018
302
27
1,740
9
Reactions: CompuTronix

NightHawkRMX

Illustrious
I have a lot of these older Dells and it really depends on the model number. From what I can tell with some quick searches, this is a Optiplex 755, which had some limitations depending on the form factor with the tower able to take most anything processor-wise that was <95w.

It should support the faster 1333 bus of the q8400 and with the improvement in single thread performance, it should be a slight bit faster and run a hair cooler:
https://www.cpubenchmark.net/compare/Intel-Core2-Quad-Q8400-vs-Intel-Core2-Quad-Q6600/1041vs1038

I'm not sure what os you're running, but if it doesn't need all 4 cores, the e8600 is a really fast processor that borders on 1st gen icore series performance. I used it in my older Dells that don't support quad core processors:
https://www.cpubenchmark.net/compare/Intel-Core2-Duo-E8600-vs-Intel-Core2-Quad-Q6600-vs-Intel-i3-560/957vs1038vs740

Hope this helps and good luck!
 

JackFive

Great
Aug 16, 2019
133
9
85
0
Sorry for being late but my friend said he will give me the cpu tomorrow so we have to wait tho he said it will be supported in your system.He had E8400 in his system then later he upgraded to a Q8400..
Thanks for the time guys i highly appreciate it..
I will post the result tomorrow for sure.
 

JackFive

Great
Aug 16, 2019
133
9
85
0
Did he have the same system as you? Then there's definitely a high chance it will work without issue.
Yes,We both have Dell optiplex 755 MT models and mine has a better overclocking motherboard,Only thing which isn't similar in both is the PLL code in the motherboard.
 
Sep 11, 2019
10
0
10
0
The Q8400 runs cooler, uses less power and is slightly faster about 12% overall. Switch would yield some gains but not a lot. Why not , go for it.
That is true for the B3 stepping, which has a 105W TDP while the G0 stepping has a TDP of 95W. The Q6600 is 65nm (older) while the q8400 (45nm) is newer. Some really old LGA775 boards (before 2007/8) have a great chance that it will not be supported. Some manufacturers can hardware "lock" the BIOS to prevent upgrades.
 

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