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We could have used several popular Core 2 Quad models, such as the Core 2 Quad Q9650, but we decided to go for flagship of Intel's Core 2 Quad family, the Core 2 Extreme QX9770.
This is the only Core 2 quad-core processor that runs at the maximum FSB1600 system speed, and it has a 3.2 GHz core clock, which is the same as the clock speed of the Phenom II X4 that we looked at previously. Using the fastest processor possible ensures that differences in memory performance become as visible as possible, and the QX9770 is the fastest Core 2 processor available for Socket 775.
There also is a Core 2 Extreme QX9775, which is based on the same core and clock speed. But that one is a Socket 771 processor for the Skulltrail platform, based on Xeon technology.
The Core 2 flagship is designed around two individual 45 nm Wolfdale die, each with 6 MB L2 cache, which combined adds up to 12 MB L2 cache. While the Skulltrail Core 2 Extreme processors are specified at a TDP of 150 W, the Socket 775-only QX9770 is limited to 136 W. That is still 6 W more than prior processors, but is acceptable for such a high-end CPU.
Hyper-Threading is not supported by Core 2, and the Enhanced Halt State C1E is missing as well, but SpeedStep and virtualization technology are included. The key difference between Extreme Edition processors and regular models is their unlocked multipliers. You can set any clock speed ratio you want, which is ideal for overclocking. We decided to stick to 3.2 GHz for testing, but changed the memory speed and timings.

Related Core 2 Reviews:
Wolfdale Shrinks Transistors, Grows Core 2
Intel Skulltrail, Part 1: The Power of Eight Cores
Intel Skulltrail, Part 2: Overclocking and Power
Intel Skulltrail, Part 3: Eight vs. Four Core Performance
Overclocking Intel’s Wolfdale E8000
Intel Power Consumption Then and Now
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Good read, but shouldn't this article have been done like last year with Core 2 Quad?
agreed. you guys have Core i7's laying around , use those.
the reason they did this using the core 2 quad and not a core i7 is that each processor/chipsets handles its memory differently, so they wanted to see what core 2 quads would do this time.
I would like to see (or would have liked in the past?) a good comparison between ddr2 and ddr3 on an otherwise identical platform - I assume you would have to use one of those p35/45 boards with both sets of DIMMs.
Wow, after the C2Q is obsolete, nobody buying them they decide to do a memory test for them. Maybe this should have been done 6 months ago?
Even 6 months ago was too late. I wouldn't buy 775 because its days of development are limited. Since I am poor I chose the AM3 because at least in a few years AMD will still be developing the platform and I can upgrade my CPU and memory, etc.
Not alot of diff in encodeing times. Looks like better off bumping up cpu or putting the $ into terabytes.
To Gin and everyone else bitching about not doing core i7 why dont you actually use your eyes and look for the article. They did a ddr3 scaling article with i7 last week.
Some people are too quick to bitch and criticize around here.
They did a core i7 scaling article last week you morons.
Quit being so quick to bitch and criticize.
I should like to point out that Core 2 has been around for VERY much longer than i7 - a LOT more people, myself included, are still using Core 2 quads. And I see no compelling reason to upgrade anytime soon, since there just isn't much out there that require more power than that.
I had this same issue with Anandtech's recent memory scaling article. With DDR3 1600 at 999-24 going for 85$ with free shipping, why buy the slower stuff? Sure you can get DDR3 1333 for 10$ less (without free shipping, and only 1 product at that price on newegg 3x2GB ) but I think you're sacrificing some flexibility when overclocking and some speed in games etc. If you're buying DDR3 then you don't have a slow cpu probably... If it was more than 10$ I could understand.
Great article I got a q9550 last November and I have been curious how much gains faster ddr3 would be with this chip and now i know

I just got a Gskill 4g kit of ddr2 1100 5-5-5-15 1.8v to replace my dieing corsair sticks and so far it seems to be running great on my 780iftw.
I'm still very happy with my purchase of my q9550 because only very recently can you build a i7 platform for the same price as the 775 setup cost 9 months ago and the difference in fps for most games going to the i7 from a core2 quad is minimal for running sli 55nm @65nm 260 216 @666 at 1920x1200 in most games so I will hold over until the gulftown comes out and ddr3 is even cheaper and faster
I agree that LGA 775 is not completely useless just yet, although others make excellent points about AM3 and LGA 1156. I do think that any discussion like this ought to consider the lifespan of DDR3 and the possibility that some future processor will make better use of increased memory speeds.
CAS 7 DDR3 1600 is quite inexpensive actually, and if there is a possibility it might be more useful in the future, wouldn't it be worth the 5 bucks extra today?
I'd like to see the DDR3 1600 under clocked to 800 levels and see how low the latency can be set. I'm sure clock speed is more prevalent than latency but would be interesting to see latencies of 4 again.
This article fails to test an important point. LOW LATENCY. If the best latencies at the designated speeds were used, that would give me a much better idea on what to spend my money on. It doesn't help me to show DDR1066 at DDR1600 latencies. Which will be better at those settings? The answer is obvious.
Great Article. DDR2 Vs. DDR3 is the typical conundrul, "Winds of Change", question on many core 2, and core 2 quad owner's minds. Do I upgrade my current system, or go with the new platform for performance per dollar gains? I understand that DDR3 is the future, but it would be nice to see DDR2 added to the test platform so that the DDR2 loyalists are given a reason to upgrade that they can not resist, or perhaps a reason not to. Like most computer subsystems that are not responsible for sales hype, memory, (whoops, other than triple channel coreI7), are often overlooked it seems in the coding world, as bandwidth gains on the hardware front rarely, if ever are realized by software. If given a bottle that might contain a genie, I'd give it a rub and ask,"Please ask Tomshardware, gifted with the best testers and hardware that money can buy, not only test the speed/latency of top memory chips, but spend some time in BIOS pushing the memory sub-system cycle to its limit per clock". In doing so, we would all have clear evidence to email the coders, and I expect by next year, we'd see the benifit of the highspeed/low latency memory that this article shows we now lack.
Nice, a memory scaling article on a processor that's obsolete. Did anyone find this article useful?
There really isn't a premium on high-bandwidth, low latency DDR3 these days. I picked up 4GB of DDR3-1600 with 7-6-6-24 timings from Newegg last month. Price after MIR was $55. It replaced my 4GB of DDR3-1333 with almost the same timings that I originally bought for $300. The faster rate memory allowed me much more head room to over clock my Q9450.