im expecting that it wont, but will a Pentium Dual-Core (Core2 Based) work in a Motherboard designed for Pentium 4 and Pentium D processors. (Intel 915G chipset) also, would i see any noticable performance increase from a single core 3ghz P4 to the 2.0Ghz Dual-Core Pentium. From what i am reading, it is compatible with older motherboards, because it is designated as a Pentium Class

Heya AW,

Some Core2 motherboards can also support Pentium D. You basically will need to find out what socket your motherboard uses and see if there are any Core2 cpus that are made for that same socket.

According to the Intel website - Intel® 915G Express Chipset - that chipset uses the LGA775 style socket. Which I believe most of the newer Intel CPUs (including Core2) use. So when you shop for a Core2 cpu, just make sure it is made for socket LGA775. If you have a motherboard manual, you may want to double check my info.

Here are all the LGA775 CPUs newegg sells - Newegg.com - Buy Computer Parts, PC Components, Laptop Computers, Digital Cameras and more!

As far as your question about 3ghz, vs Core2 2ghz, it really depends on what you're doing. For gaming and multitasking, you should see a difference. I doubt it'll be mindblowing if all you change is the CPU.

If you are just working on one task, you should see the 3ghz do better. Either CPU, I doubt you'd see a massive difference in most situations. I would think for gaming you'd see the most difference, but again it's not going to be mindblowing if all you change is the CPU.

It is hard to compare dual core to single core. With single core CPUs, I read that you'll only notice some sort of difference if the CPU speed on the newer processor is more than a 20% increase. For example, if you went from a 3ghz, to a 3.3ghz (10%), you wouldn't really notice anything. But if you went from a 3ghz, to a 3.6ghz (20%), you should be able to tell the difference.

But with dual cores, it doesn't work as nicely as that. It doesn't work like a straight multiplier. Like if you have a 2ghz dual core, its not 2 x 2ghz = 4ghz. That would only be true if each core was being utilized at max. So in that case, from 3ghz to 4ghz, you'd see a difference.

Hope that helps!

oh my motherboard doesnt support C2Duoes. it is an older Intel mainboard for a gateway, and it only supports Pentiums and Celerons, what i mean is, will my LGA775 board which only supports Pentium motherboard, work with a Pentium-branded Core2 based processor.

Whoops, I had a brainfart and forgot to check CPU compatibility in that chipset specs page. I just saw LGA775 and remembered lots of dual cores use that socket.

Yeah that chipset only supports Pentium 4 based CPUs. So that would be a no for dual cores.

i checked with gateway support, and they said it works with Dual core pentium ds, but i forgot to ask about thsoe

Hmm...Pentium Ds didn't show up on the list of supported CPUs on the Intel site under that chipset. I'd ask Intel before stepping up to a Pentium D. I can't say I'd have much faith in Gateway support lol.

intel support said to contact gateway support.. who said that it was compatible. im pretty sure that Pentium Ds are compatible with the 915 chipset