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Core2Duo vs. Pentium D?

VERAULT said:
Older cpu? I was over clocking ALL the pentium 1 cpus i ever came across back then. Never burned a single one..
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I also over-clocked many a CPU back in the day and never burned a single one. I'm just not a big fan of it anymore.

Unknown_K said:
Q6600 tape mod for 3Ghz (I have done it it works well).


https://www.overclock.net/threads/need-clarification-on-the-q6600-bsel-mod-to-3ghz.1540627/
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Oh that's interesting. Tell me, is this "overclocking" or is it more like the old pencil-mods of AMD CPUs? EG the CPU is actually a 3ghz chip that was down-throttled to 2.33?
 
After very long and careful consideration, I decided to pay the princely sum of $4.83 cents for a salvaged Q6600 from China. At the very least it won't hurt to have an extra core2 in my collection.
 
hunterjwizzard said:
Tomato/tomato.
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No, it's actually important. There *was* a 2.33ghz C2Q CPU, the Yorkfield Q8200. And compared to the Q6600 it legitimately sucks serious arse, so when you accuse the Q6600 of being the same thing you're seriously insulting it. ;)

(Context why I know this: This was the period where Intel decided that it was a good marketing move to position certain CPUFlag features, like VT-x virtualization support, as "pay extra" options they'd disable on their cheaper models. The Q6600, despite being the bottom rung model in terms of clock rate in its generation, is a "full fat" CPU with all the same flags as the top-of-the-line Extreme models enabled. When Intel pushed out the Yorkfields they split the line into 8xxx and 9xxx models, and the differences were twofold:

1: The 8xxxs had only four MB of L2 cache, unlike the six or 12 of the 9xxx's. (Or the 8MB of the Kentsfields like the Q6600s)
2: The 8xxxs had VT-x disabled.

It's the latter thing that really sucked. Granted it didn't matter much for a desktop, but someone I knew bought a rack full of 8xxx equipped pizza boxes for a dev lab without understanding the difference and it caused a serious headache for them. I mean, sure, their fault, they should have read the manual, but still... boo.
 
hunterjwizzard said:
I also over-clocked many a CPU back in the day and never burned a single one. I'm just not a big fan of it anymore.



Oh that's interesting. Tell me, is this "overclocking" or is it more like the old pencil-mods of AMD CPUs? EG the CPU is actually a 3ghz chip that was down-throttled to 2.33?
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Its like running and old Pentium 2 333Mhz with 66mhz FSB at 500 Mhz with 100FSB. Just a clock multiplier hack.
 
krebizfan said:
It is more that Intel was selling chips at a significant underclock. Bringing the chip to the clock speed the chip should have been sold at isn't exactly an overclock.
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That's an interesting logic.

Well, I spent $10 on the motherboard and $5 on a CPU. I guess I'll give it a whirl, at least I won't be out folding money if it burns up.
 
Unknown_K said:
Pentium D's were LGA 775 and anybody with a brain would swap them out for a cooler running and faster Core 2 chip.

I can see why somebody ages ago would have wanted a dual core Pentium D to replace a LGA 775 Pentium 4 BEFORE C2D were out and cheap. One persons junk is another persons upgrade.
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No.

There is a whole generation of LGA775 systems that cannot take a Core 2 Duo but can take a Pentium D. Dell's Optiplex GX620, for instance. This system works great with a Pentium D, with the proper BIOS and heatsink/fan. They don't work at all with a Core 2 Duo, at least the last I checked. This is from personal experience with over a hundred GX620's; I tried a low end C2D in a few of them, but none worked (Optiplex 745, the next generation, supports C2D fine). Pentium D did work; we actually have a couple still in use. EDIT: one is running Windows 10. Not really well, but running it nonetheless. Have a couple of NetBurst systems, Intel Serverboard S5000PSLASR, with Dempsey Xeons and 32GB of RAM, running Windows 10, even.

All LGA775s are not the same.
 
Last edited:
lowen said:
All LGA775s are not the same.
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Alas, too true. It goes all the way back to 2004; the even older GX280 is also LGA775, and I'd have loved to put a C2D in that because despite having been cursed with being born a Pentium 4 it was a really nice little box. But, yeah, ain't gonna happen with a 915G chipset. I don't think it'll even take Pentium Ds... and even if it could it the machine would probably melt.
 
I used to really hate the way LGA775 coolers attached to the motherboard, but I've since grown to appreciate it.
 
hunterjwizzard said:
I used to really hate the way LGA775 coolers attached to the motherboard, but I've since grown to appreciate it.
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The plastic mounting sucks on stock coolers. Those things are not meant to be taken off and reinstalled (but you can get equally shitty replacements for the broken bits on ebay cheap direct from China).

I am talking about coolers from ZeroTherm and Zalman with decent mounting hardware.

https://www.performance-pcs.com/cle...ler-socket-775-939-940-am2-nv120-premium.html

https://m.alza.cz/EN/gaming/procesorovy-chladic-zerotherm-cf900-d87089.htm

https://zalmanusa.com/products/cnps9500at
 
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