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1333 CPUs at 1:1?

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  • Motherboards
  • CPUs
  • Compatibility
  • Overclocking
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June 27, 2007 4:47:16 PM

Got a Gigabyte DS3 Rev.3.3 that's 1333 compatible.

Simple question:

Does this mean that I can OC a 1333 CPU (ie-6750, 6850) with a 1:1 ratio without having to get a P35-based board? DDR3 is not in the plan, I'm sticking with DDR2 for awhile.

Thx.

More about : 1333 cpus

June 27, 2007 5:24:14 PM

Quote:
Got a Gigabyte DS3 Rev.3.3 that's 1333 compatible.

Simple question:

Does this mean that I can OC a 1333 CPU (ie-6750, 6850) with a 1:1 ratio without having to get a P35-based board? DDR3 is not in the plan, I'm sticking with DDR2 for awhile.

Thx.
You have read some of the flame wars on the P35, no? There are plenty of P35 boards out there that will run DDR2. And at least one that has DDR2 and DDR3 slots. The P35 kicks the crap out of the P965 IMO.

Read this article.
http://www.anandtech.com/memory/showdoc.aspx?i=2989&p=4
June 27, 2007 5:56:21 PM

Quote:
That means the real performance surprise in these tests is that the revised memory controller in the Bearlake chipset improves buffered memory bandwidth by 16% to 18%, with a real-world improvement in gaming and application performance of 2 to 5%. This is a pretty impressive improvement for a memory controller update. To repeat an old saying please remember that memory is just one small part of the system, so a 2% to 5% increase in gaming from the memory controller alone means the P35 memory controller is significantly improved over the P965 chipset.

This is a good improvement, and one that would convince me to buy a P35 if buying a board anyway, but not one that would make me go spend money on a new board if I already had a DS3 3.3 (which I do).

Can anyone answer the original question?
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June 27, 2007 6:25:36 PM

Yeah my bad, I wouldn't change that board out either. I don't know what kind of OC you will get with that, but since it is 1333 compatible I would assume it would OC at 1:1 with DDR667 no problem.
June 27, 2007 6:45:39 PM

Ya, forget about DDR2/DDR3, etc for the P35.....that's extraneous to the question. I only mentioned it because of the native 1333 coming to DDR3. But my question is somewhat related......if I'm going to need DDR3 to OC at 1:1 then that's a problem. But if I can OC a 1333 CPU based on the 1066 DDR2 at 1:1 then we're all happy.

My concern is that the 1066/1333 won't jive and let me OC at 1:1. But since my DS3 takes 1333 chips, then I would assume it would recognize a 1333 CPU and then let the FSB move synchronously.

Anyone know if this is the case?
a c 98 V Motherboard
a c 88 à CPUs
a b K Overclocking
June 27, 2007 7:04:41 PM

What are you talking about? Moving from a 1066 effective FSB chip to a 1333 effective FSB chip shouldn't change your OC potential. If your FSB:RAM ratio is 1:1, and your using a 1066 effective FSB, do you even know what your RAM speed is set at? How does changing to 1333 make a difference? As long as you're running DDR2-667/800, you should be ok with either one. I'd only worry about this if you are running something slower, like DDR2-400/533.
June 27, 2007 7:35:50 PM

Quote:
Got a Gigabyte DS3 Rev.3.3 that's 1333 compatible.

Simple question:

Does this mean that I can OC a 1333 CPU (ie-6750, 6850) with a 1:1 ratio without having to get a P35-based board? DDR3 is not in the plan, I'm sticking with DDR2 for awhile.

Thx.



Your question makes no sense ...

1333 means the processors official FSB rating is 1333. Also means more work for your mobo.
June 27, 2007 7:42:21 PM

My mobo is already above 450 FSB. 333 is a piece of cake.

Thx 47, that was the best semblance of a knowledgeable answer so far. My RAM will be minimum DDR2-800, likely Crucial Ballistix with D9's so I'm sure I can hit the high speeds. I just thought I read somewhere that the 1333's coupled with the DDR3 will allow "easy" 1:1 OC's.....can't remember where or else I'd post the link. Which was what confused me, because I thought it shouldn't make a difference.
a c 98 V Motherboard
a c 88 à CPUs
a b K Overclocking
June 27, 2007 7:59:29 PM

It wouldn't. 1333 effective FSB is a base frequency of 333. Double this, and your ram is at 667. For a 1:1 ratio, all you need is DDR2-667.

I could see buying a new motherboard, one that "natively" supports 1333, as your chances of hitting 1600 would probably be better. 1600 effective is a base frequency of 400MHz, double that and you're actually running DDR2-800MHz. (boards vary, so make sure you get one that can do 1600.) I don't know what link you read, but you either miss read it, or they are wrong. (or I'm missing something somewhere, but I have no idea what...)
June 28, 2007 12:30:08 AM

Well, the DS3 is a heckuva board, so I'm HOPING it can push a 6750 or 6850 pretty high..........otherwise I'd have to look at a P35 Giga or ASUS.......I hate swapping mobos, formatting, etc.......ugh.
June 28, 2007 2:24:03 AM

Quote:
Well, the DS3 is a heckuva board, so I'm HOPING it can push a 6750 or 6850 pretty high..........otherwise I'd have to look at a P35 Giga or ASUS.......I hate swapping mobos, formatting, etc.......ugh.
I have a DS3 board too. Keep us posted on how this works out for you
June 28, 2007 2:40:20 AM

May be awhile.......til the prices drops come.........and also til I convince the wife I need an upgrade ;) 
July 4, 2007 10:04:47 PM

You can get that P35 for $150 and sell your old one. Ditto on the RAM, and go with Low-Latency 667. That won't take too much negotiations will it ;)  ?

f61
July 7, 2007 3:27:59 PM

Most high end boards can support up to or over 1600fsb.

For 1:1 with ram you do fsb/4= bus speed.

Say you have 333 bus speed, then you'd need ATLEAST DDR2 PC2-5400 which runs at 667mhz. It will say in BIOS like that the memory will be runing at half that, 333 with 1:1 with your FSB but because it is DDR it will actually be effectivly running at 666/7mhz.
July 13, 2007 10:17:33 AM

:bounce:  A FSB1333 processor runs at 333 MHz fsb x 4 (quad pumped) to run 1:1 with this processor you will need DDR2 667. DDR2 800, 1066... ram will allow you to go above a 333 MHz fsb, 400 MHz and 533 MHz fsb at 1:1 respectively.
A lot of people do not really understand this whole concept and use faster ram just because it has a bigger number, their motherboard supports it, or it matches their processors fsb.

It's kinda' sad really, all that high speed memory going to waste.
July 16, 2007 10:49:18 AM

Actually in the OP's response above, he's already running 450 Bus, and would need some high quality/low latency RAM to push 667 to 900.
July 30, 2007 7:04:27 AM

Zorg said:
Quote:
Got a Gigabyte DS3 Rev.3.3 that's 1333 compatible.

Simple question:

Does this mean that I can OC a 1333 CPU (ie-6750, 6850) with a 1:1 ratio without having to get a P35-based board? DDR3 is not in the plan, I'm sticking with DDR2 for awhile.

Thx.
You have read some of the flame wars on the P35, no? There are plenty of P35 boards out there that will run DDR2. And at least one that has DDR2 and DDR3 slots. The P35 kicks the crap out of the P965 IMO.

Read this article.
http://www.anandtech.com/memory/showdoc.aspx?i=2989&p=4


The P35 chipset do NOT "kick the crap" out of P965. It is marginally better. I have read SEVERAL comparisons between the two chipsets and they ALL come to same conclusion that the P35 boards, depending on which board you get, yield on average 4-5% increase in overall system performance over P965. The question is should one pay a 50% premium for a 5% boost in perf over P965.
August 1, 2007 8:30:30 AM

Gh0stDrag0n said:
A FSB1333 processor runs at 333 MHz fsb x 4 (quad pumped) to run 1:1 with this processor you will need DDR2 667. DDR2 800, 1066... ram will allow you to go above a 333 MHz fsb, 400 MHz and 533 MHz fsb at 1:1 respectively.


I'm currently building a system myself, and am still kind of confused by this part of the equation. I get that the 1333 core 2 duos are quadpumped and to find the actual fsb you divide it by four, and that you do the same thing with ddr only divide by 2 instead of 4. However I don't quite get how you can achieve a 1:1 ratio for a fsb 1333 processor with anything other than DDR2 667 ram.

The way I see it now is FSB 1333 / 4 = 333, and DDR2 667 / 2 = 333, so that equates to a 1:1 ratio. How can you still get a 1:1 with DDR2 800 and 1066 ram using the same processor?

Sorry if this is a stupid question and I'm just missing something obvious, like I said, still a bit new to all of this

edit: just realized what I may have been missing here, was the implication to achieve 1:1 with DDR2 800 or 1066 memory running on a 1333 fsb processor overclocking the cpu to match the new speeds?
August 1, 2007 6:43:21 PM

skyguy said:
Does this mean that I can OC a 1333 CPU (ie-6750, 6850) with a 1:1 ratio without having to get a P35-based board?


Yes.
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