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Best CPU with the LGA775 socket?

#1PurificationPosted 8/31/2013 9:42:48 AM
As the title suggests, I've been using the E6750 Core 2 Duo for a long time but I want to upgrade. I'd prefer not to have to upgrade my motherboard though so what is the best CPU that can fit into the same motherboard that supports the E6750. It can be either Intel or amd.

And how much of a difference would there be between that best CPU versus an i5 or i7?
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#2DragnfyrPosted 8/31/2013 9:44:56 AM
There would be a big difference these days. An LGA 775 quad-core is not going to be worth the money you'll have to pay to get one.
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#3gsf4lyfePosted 8/31/2013 9:46:03 AM
Purification posted...
As the title suggests, I've been using the E6750 Core 2 Duo for a long time but I want to upgrade. I'd prefer not to have to upgrade my motherboard though so what is the best CPU that can fit into the same motherboard that supports the E6750. It can be either Intel or amd.

And how much of a difference would there be between that best CPU versus an i5 or i7?


wat
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#4Killah PriestPosted 8/31/2013 9:52:47 AM
q6600 was one of the best processors ever IMO.
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#5GipFacePosted 8/31/2013 10:30:16 AM(edited)
The BEST LGA775 CPU is the QX9770, then the Q9650. Neither of those ever got a significant retail price drop: one is an "extreme" CPU, the other was the top Yorkfield CPU. So you won't find one of those for cheap unless the owner really wants to dump it.

The vast majority of people had either a Q6600 (65nm), a Q9550 (45nm), or a Q8200 (45nm with half the cache disabled).

QX9770 was known to hit 4.4ghz stable. At that speed it's about as good as an i7-940 at stock:

POV-Ray real-time raytracing fps (legitreviews.com):
Q6600 stock: 11.74
Q9550 stock: 15.38
Q9650 stock: 15.89
QX9770 stock: 16.82
i7-920 stock: 20.81
QX9770 @4.4: 22.37
i7-940 stock: 23.03

Unfortunately they never benched the newer CPUs with this program, but you can extrapolate. The i5-4670k is about 20% faster than the i7-940 in multithreaded applications. So in the end, a QX9770 @4.4 won't be that far behind today's CPUs, but it'll suck up a TON of power (150W vs 90W) while doing so.
#6gastamanPosted 8/31/2013 10:03:25 AM
Just because you have a socket 775 motherboard, doesn't mean your motherboard will support all socket 775 CPUs. Find your exact motherboard model and check the manufacturer's CPU support list for it.
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#7RogueStrikerPosted 8/31/2013 10:22:14 AM
Not to topic hijack but I didn't feel like this question needed an new topic.

I still have a QQ6000 and was thinking of getting 8GB of RAM over 4GB. Thing is my motherboard uses DDRRAM 2.

Should I bother upgrading or just wait for the inevitable new pc build? And what's a good set of sticks?
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#8ShubPosted 8/31/2013 10:31:18 AM
I don't think upgrading your E6750 to a better LGA775 CPU would be a smart investment, unless you can get a really good deal. It would have to be a Core 2 Quad Q95xx or 96xx in order to be a worthwhile upgrade, and there's no guarantee your motherboard will support that anyway (even if the new CPU fits physically).
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#9GipFacePosted 8/31/2013 10:39:50 AM
RogueStriker posted...
I still have a Q6600 and was thinking of getting 8GB of RAM... Should I bother upgrading or just wait for the inevitable new pc build? And what's a good set of sticks?

If you pay for your own electric bill then you may as well wait for a new build. My electricity is included in my rent so I've had no incentive to upgrade from my Q6600 @3.2 w/8gb ram. I don't game much with it, but it's still a great video editing computer ever since I put in an SSD and a 4TB HDD.

Get DDR2-800 sticks so you can run it at 400x8 (3.2ghz) or if you're lucky, 400x9 (3.6ghz).
#10NicodimusPosted 8/31/2013 11:05:33 AM(edited)
I know the answer to this because I upgraded mine a few months ago. The best CPU you can upgrade to is the Q9650. It's a Quad Core 2 at 3.0 gHz stock. I'm actually selling mine right now since I just got Haswell:

http://www.ebay.com/itm/251326355865?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1558.l2649

Not that you have to buy mine or anything, but just letting you know.

Also, while the Q9770 might technically be the best 775 CPU, good luck finding one. I gave up and got the Q9650.

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