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Old 11-21-2008, 09:45 PM   #1
zoolane
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Default i7 CPU for Video Editing

Because of the many posts scattered around this forum dealing with CPU speed and the best processor for EDIUS, I am posting this information I have collected to save others hours of searching.

The new i7 is on the right:


SORRY.

The INTEGRATED MEMORY CONTROLLER on the new i7 processor ONLY SUPPORTS DDR3 RAM.

You will still need a new motherboard for the larger i7 cpu socket plus new DDR3 memory. The new i7 chip has 2 to 3 times the memory bandwidth of a QX9770. Both CPUs are based on the same 45 nm core, but the i7 has a 64k L1 Cache, a 1mb L2 memory cache, PLUS a shared 8MB L3 cache with an onboard controller and improved branch prediction. Actually, this can give you up to 3 times the bandwidth of a 3.2 GHz QX9770 quad processor! The i7 also has a new SSE4 instruction set.

This is just a quick review, and more info can be found in the following link, complete with pictures, diagrams, and comparisons: http://www.legitreviews.com/article/824/1/

Here is how a typical system looks. The huge cpu fan is suggested because the i7 chip has its own built-in power management module that will automatically overclock (speed up) each core separately as required.

http://www.extremetech.com/article2/...2333768,00.asp

Here are the benchmarks for the i7 compared to other QUAD CPUs in rendering apps.

http://www.extremetech.com/article2/...2333773,00.asp

Summation: The top of the line i7 965 QUAD Core processor is about 12% faster than the current top of the line Q9770, is cheaper, but requires a special motherboard for its socket, and must use DDR3 memory.
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-Processor: Intel E8400, running @ 4.29 GHz
-RAM: 8 gig of OCZ DDR3-1600, running @ 1.521 GHz
-Video Card: BFG 9800GX2; both GPUs dedicated to one monitor
-PCI x16 bus: overclocked to 105 MHz
-Capture Card: BlackMagic - DeckLink Extreme II
-Storage: 6 Samsung Spinpoint, 1 Terrabyte, SATA -drives; 4 drives in RAID 10
-OS: Vista64
-Panasonic AG-HMC150P HD Cams for field

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Old 11-22-2008, 02:33 AM   #2
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Hi Zoolane,
It is a great CPU if you have Mulithreaded applications i.e a lot of the high end games take full advantage of this. but to change the CPU, MB, Ram is just not worth it at the moment until the software will take advantage of it all.

Steve
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Old 11-22-2008, 02:38 AM   #3
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I would also expect Procoder 3 to benefit quite a bit if you are using an output target like "DVD Preview", or if you are doing batch encoding.
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Old 11-22-2008, 02:52 AM   #4
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But is any game enough to buy all the new gear and to find out Edius won't run on it, i.e X58 boards ect.

Steve
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Old 11-22-2008, 05:46 AM   #5
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Hi Steve,

This is what first caught my eye about the i7 chips: RENDERING BENCHMARKS.

I had to rethink the "gaming" boards.

Blu Ray -> Games -> Speed = lots of high speed rendering:


The 50% rendering increase over a Q9450 caught my eye.

CINEBENCH 10 can be downloaded free here: http://downloads.guru3d.com/download.php?det=1708
__________________
-Motherboard: ASUS Maximus Extreme (the overclocker's dream)
-Processor: Intel E8400, running @ 4.29 GHz
-RAM: 8 gig of OCZ DDR3-1600, running @ 1.521 GHz
-Video Card: BFG 9800GX2; both GPUs dedicated to one monitor
-PCI x16 bus: overclocked to 105 MHz
-Capture Card: BlackMagic - DeckLink Extreme II
-Storage: 6 Samsung Spinpoint, 1 Terrabyte, SATA -drives; 4 drives in RAID 10
-OS: Vista64
-Panasonic AG-HMC150P HD Cams for field

Website: http://TvTower.com

Last edited by zoolane; 11-22-2008 at 06:01 AM.
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Old 12-14-2008, 05:25 AM   #6
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Here is another useful link (with some impressive Premier Pro 3 test results)

http://www.tomshardware.co.uk/Intel-...iew-31404.html

I think we are going to see a significant performance improvement with the i7 and intels reintroduction of hyper-threading.

Cheers,
Marcus Seeger
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Old 12-14-2008, 06:03 AM   #7
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It is because of the design without the FSB, in which the CPU now talks driectly to the Extra 2 Ram slots which is allocated for the FSB. I think at the moment the FSB slots only support up to 1066mhz ram.


Steve
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Old 12-14-2008, 06:37 AM   #8
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To quote Tom's hardware:

Re: FSB

"With the Nehalem architecture, Intel is finally saying farewell to the classic front side bus interface we have known for so many years. Instead, Core i7 processors will utilize the new QuickPath Interconnect (QPI) to communicate with the northbridge...
...In contrast to the classic FSB, QuickPath Interconnect enables direct communication with another processor. The result is improved performance, since using the FSB design, such communication was previously only possible via a detour through the comparatively slow northbridge.

QPI brings a fascinating possibility to the table: in order to create a dual-CPU motherboard, a company simply has to solder a second processor socket onto its PCB. Since the processors can communicate with each other directly, this option is independent of the chipset, making it very simple, not to mention inexpensive. A good portion of today’s software shows marked performance gains thanks to the four additional virtual processors provided through Hyper-Threading. When adding another CPU with real cores, the performance improvement should be even more pronounced."

Re: RAM speed:

"Depending on the processor, different memory speeds will be supported; for example, the Core i7 920 and 940 will offer the two memory multipliers, 6 and 8. Together with the internal chip base clock of 133 MHz, that gives us memory speeds of DDR3-800 and DDR3-1066. The Core i7 965 will support the multipliers 10 and 12, giving user the option of installing faster DDR3-1333 or DDR3-1600 RAM."

The more I look into the i7 the happier I am...btw Steve what kind of work do you do in Cairns?

Cheers,
Marcus
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Old 12-14-2008, 08:04 AM   #9
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I am in Caloundra QLD, How did you get Cairns? Anyway I own a Computer Buisness working mainly on Server systems ect, i.e build them, service them ect. Slowed things down a bit now and just keeping a few regular clients.


Steve
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Old 12-15-2008, 12:23 AM   #10
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Right, Caloundra..oops. Actually I used to live not far from you in Mapleton in the early '90's :-)
Have you set up any i7 systems yet?
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