Want to OC a q9450 to 3.6ghz

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R

redrage

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I'm planning on getting a q9450 with 8 gb's of memory and two 4870's in xfire along with a 300 GB velicoraptor. I want to OC the q9450 to 3.6 Ghz stable and was wondering if you all could recommend some good mb's for OC'ing as well as good ram to go with it. Thnx for any help offered :p
 
Lupiron

Lupiron

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Guess it depends on what you wanna do.

The NVidia chipsets are harder to OC.

The 9450 has a x 8 Multiplier, so you will need at least 450 FSB. (450 x the multiplier for 3.6 Ghz.)

Anything from the P5k-e wifi thats 150 bucks, to the Maximus formula thats 250, on up!

P45 chipset boards get REALLY high FSBs.

The ram should be 1000 Mhz or better. It will run at 900 Mhz while at that 450 Mhz FSB. (While in sync.)

But since no one really stops where they say they plan. You might as well start at your 3.6, and head a bit higher, and the 1000 Mhz ram will do that.

Good Luck!

if you need SLI... that makes everything different!

--Lupi
 
sailer

sailer

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If its planned to run 8 gig of ram, be aware that limitations set in on overclocks with that much ram. When I went to 8 gig, from the previous 4 gig, I lost about 200mhz of speed. You'll need to figure on running 2.1-2.2v on the ram. You'll also need to look for the best motherboard you can afford to hit the high FSB, like an X48 from ASUS (Formula or Maximus), DFI or the Foxcon Black Ops. Gigabyte has a fairly decent one as well. Check out Anandtech for details.
 
R

redrage

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I was looking at a x48 board, so i can run Crossfire. I've never really got into OC'ing before but i understand how to do it. Why does more ram = limits in OC'ing? with a higher CPU clock speed vs more ram what would have a better effect? should i just stick with a lower OC and more ram? Can i even hit 3.6 GHz with 8 gigs of ram? I want more ram because i believe it helps in 3D rendering in programs like maya and 3ds studio which is something i wish to pursue for a future career. I was looking at the Gigabyte x48 board but would the ASUS formula be better for OC'ing? can P45 boards run Crossfire?
 
Lupiron

Lupiron

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More RAM, or more sticks of RAM? With 4 stick in, the signal is actually divided up to get the two extra sticks as well. Making the over all memory frequency weaker.

A good board and this shouldn't matter.

--Lupi
 
R

redrage

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both, i don't even think it they make 4 gb sticks so only two sticks of ram is impossible :p. I want 4x2GB sticks. Can you recommend some ram and a mb that would allow me to have 8 gb's and OC to 3.6 GHz.
 
Lupiron

Lupiron

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Maximus formula!

Easy OCing board.

Then some 1000 Mhz for the 450 Mhz FSB you will need at that speed!

The tighter the timings, the looser the wallet!

--Lupi
 
R

redrage

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Alright some i'm going to go with this

motherboard:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131319

for OC'ing and i can't decide on memory or a good CPU cooler. I've been looking at this
memory:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820146755
or
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227289

The first one has 66 mhz lower freq, but better timings, however the second one seems more reliable.

These are the CPU fans i've been looking at:
http://www.newegg.com/Product/Product.aspx?Item=N82E16835233003
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103040
http://www.newegg.com/Product/ProductReview.aspx?Item=N82E16835185027

Those are just a few things i've looked at, i'd gladly take recommendations because i want the best bang for my buck.

 
J

JDocs

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Well to answer the question about why more ram equals lower overclocks. Well I guess depending on how you work it you could get around the mhz barrier however with most Intel/DDR2 motherboards if you install 4 ram chips they are limited to 800mhz from the motherboards side so even if your RAM is set to 1066mhz, for instance, you'll still only get 800mhz. This also applies to DDR3 motherboards but there the 4 chip speed limiter is 1333mhz per chip for 4 chips.

Where this effects your overclock is your FSB. With 4 DDR2 RAM chips anything over 1600mhz QDR FSB is pointless in terms of system/memory performance since your RAM is limited to 800mhz (dual channel "doubles" this up). After that a higher FSB adds more frequency but that doesn't matter to much since you can't feed data in fast enough to use the chip fully so anything higher than that just really adds heat in real world circumstances.

I learn this the hard way however (4x1gb Corsair Dominators :() you can normally scale back to 800mhz CL5 @ 1.8 volts, at times you might need 1. 9volts
 
J

JDocs

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The Asus Rampage Extreme motherboard is DDR3 based so its limit is 1333mhz per chip when using 4 chips. The other Rampage Formula is uses DDR2 its limited to 800mhz.

You can work around this problem for higher frequencies by 'overclocking' your RAM as you would if the problem didn't exist and the CPU/RAM frequencies will be raised however the northbridge will still be limited to 800mhz per chip and the system can only operate as fast as the weakest link allows. So if you set your CPU to a 450mhz FSB and the memory devider to 1:1 you'll on paper hit 3.6ghz on the processor and 900mhz on the RAM but your RAM I/O speeds will still be limited to 800mhz which makes going over 400mhz FSB rather pointless. Only synthetic benchmarks will show any real improvement and you'll add some heat and volts.
 
Lupiron

Lupiron

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If the formula is anything like its cousin, then all will be well, and a huge FSB to go with it. Just get at least 1000 Mhz, like I said earlier. The timings and price need to be weighed only by what you can get.

--Lupi
 
halcyon

halcyon

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I was very pleasantly surprised recently with my Rampage Formula and OCZ Reapers HPC 1066 RAM. While I knew I could get the FSB past 1.6Ghz on that motherboard effortlessly and that I'd had the RAM to 1.08Ghz at CL5 stable I didn't know that the I could have 8GB of this RAM on this board @ 850Mhz at 4-4-4-12 timings and the FSB @ 1.7Ghz.

I guess everyone else with a Rampage and Reapers figured that out before me, thanks for sharing...not! :pt1cable:

Very flexible motherboard. Very flexible RAM.
 
1haplo

1haplo

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I have the Rampage Formula with the X3350(Q9450 Xeon) at 3.6 with 8 Gig of RAM. This board is great for overclocking. The P5E Deluxe is the same board minus the LCD Poster, and Buttons. It is 229 at Newegg.

Most X48 boards will do 3.6 with a Q9450. Be sure you get RAM that is rated for speeds higher the 450 FBS (DDR2-1000 or Higher).

Get a good cooler and a good power supply.

1Haplo
 
R

redrage

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Is there any better memory i could get from newegg or another site that's over 1000mhz and has good timings in 2 gb sticks?
 
iluvgillgill

iluvgillgill

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i didnt check Newegg because its blocked here.but if its available get the Biostar Tpower P45. and that i can guarrantee you your CPU will start smoking before the board does! but other pars seems fine to me.

and hello lupi!so hot here at china!><
 
Lupiron

Lupiron

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hehehe, you made it there, huh, gill? Hows the prices on junk out there?

And yeah, they have certain sites blocked Via the state owned ISPs. so you can't look at alot of junk!

They dont wanna taint their people with western Ideals and junk!

--Lupi
 
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