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Intel Q9550 compatability with ddr3 1333mhz ram

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May 15, 2009 7:43:51 AM

hi i'm currently using the intel q6600 processor which runs at 1066 fbs which bottlenecks my 1333mhz ddr3 ram to just 1066mhz so in order to avoid this bottlenecking i'm planning to buy an intel Q9550. My question is will the Q9550 also bottleneck my ddr3 ram to 1066mhz............also note that i do not wish to overcloack my pc in any way...........can anyone plz give your suggestions....

i'm mainly gonna use my pc for gaming and multimedia purpose

my current config is

q6600
2GB ddr3 ram 1333mhz which is bottlenecked to 1066mhz
DP45SG
4870x2 with 650 smps
samsung t220
segate 1.5tb
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May 15, 2009 8:16:06 AM

Why not overclock the Q6600? It can easily overclock to 3.0GHz (the speed it would run at a 1333 FSB). In addition, you can run RAM at a speed different than the bus speed. If you wanted, you could keep a 1066 bus speed, and run your RAM at 1333.
May 15, 2009 8:24:04 AM

how to keep the bus speed at 1066 and run the ram at 1333...........does this operation require overclocking the ram or processor
Related resources
May 15, 2009 8:24:40 AM

I really don't understand why you don't want to overclock. You don't even have to raise the voltage. The only thing to raise is the psp from 266 to 333. And this way you will have a better processing power without spending any money.
And are you sure is DDR3 and not DDR2? You didn't rell us what motherboard you have which is the most important thing in this equation.
May 15, 2009 8:28:54 AM

my mother board is intel DP45SG and i'm using a 2GB transend 1333mhz DDR3 ram.......my cabinet is zeberonics antibiotic
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May 15, 2009 9:08:56 AM

You should just be able to set the RAM speed to 1333 in the BIOS. That's all.

May 15, 2009 9:12:48 AM

thanks a lot dude

but will this procedure cause any damage to the motherboard or any other components..........


and is this procedure termed to be called as overclocking
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May 15, 2009 9:26:42 AM

If your RAM is rated at 1333, it's not overclocking, no. It shouldn't damage the motherboard either. Just make sure that you set the RAM timings and voltage to the correct values (as provided in the RAM spec sheet).
May 15, 2009 12:04:38 PM

Strangerstranger, you are correct. It's the "worst" bottlenecking yet.

Arokia, even if you will increase it from 1066 to 1333, you will not fell any difference and the memory will be asyncron with the processor which for Core 2 duo is not a good think. So either you increase psp to 333 and it will be sycron with the memory (1333) or you just leave it as it is.

My suggestion is to increase the psp and have a much better pc.
May 15, 2009 12:28:31 PM

hey i now how to change the speed from 1066 to 1333mhz in the bios but i dont know how to adjust the voltage and the timings

my mother board is DP45SG

in bios setup under performance under memory config i find these specifications

Performance Memory profile-------------------------------------[manual-user defined]
system memory speed--------------------------------------------1066mhz
current memory settings-----------------------------------------8-8-8-20
reference frequency-----------------------------------------------[default]
memory frequency-------------------------------------------------[1066mhz]
tCL--------------------------------------------------------------------[8]
tRCD------------------------------------------------------------------[8]
tRP--------------------------------------------------------------------[8]
tRASmin--------------------------------------------------------------[20]
tWR-------------------------------------------------------------------[8]
tRFC------------------------------------------------------------------[48]
tWTR-----------------------------------------------------------------[4]
tRRD------------------------------------------------------------------[4]
tRTP------------------------------------------------------------------[4]
memory voltage---------------------------------------------------[default]
total memory-------------------------------------------------------2048 mb(DDR3)
memory mode------------------------------------------------------single channel
memory
memory channel A:------------------------------------------------2048MB(DDR3 1066 spd 8-8-8-20)
SPD defined as Nominal------------------------------------------[tCL]-[tRCD]-[tRP]-[tRASmin]


my ram is: JetRAM DDR3-1333
code : JM1333KLU-2G
2gb memory module STD
240 DDR3 DIMM (256Mx64)
(128Mx8/DDR3 1333/ 9-9-9)
[7U]

wat changes should i make

or does anyone have a link which will be usefull to get this information
May 15, 2009 10:20:23 PM

Go to performance and Processor overrides and on the bottom of the window you should have something like "Host clock frequency". Write 333. Than check to see if the memory's frequency is 1333 and that's it. You might need to increase just a little bit processor's voltaje but first you can try without it.
May 16, 2009 12:22:46 PM

Get another stick of RAM to run it in dual channel You will see much more gain then raising it from 1066 to 1333.
May 27, 2009 10:59:43 AM

thanks guys for all your suggestions

but just one question for my general knowledge

"Will the Q9550 also bottleneck my ddr3 1333mhz ram to 1066mhz"

without overclocking

my motherboard is DP45SG and it supports 1333mhz
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May 27, 2009 11:09:12 AM

No, the Q9550 has a native FSB of 1333.
May 27, 2009 12:39:01 PM

No Mousemonkey not because Q9550 has FSB 1333. The processor should have 2133 to be able to run syncron with the normal ram speed of 1066. Even if your PSB is 333 (FSB 333x4=1333) and your ram is 533 (2 x 533=1066) you can increase the PSB and drop the multiplier and still have FSB 1333 but I don't think this will change too much. This way will take advantage of the ram speed. From my knowledge Core 2 duo and quad are not bandwidth hungry but you can try and see. Please guys correct if I'm wrong about the bandwidth.
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May 27, 2009 12:43:49 PM

hefox said:
No Mousemonkey not because Q9550 has FSB 1333. The processor should have 2133 to be able to run syncron with the normal ram speed of 1066. Even if your PSB is 333 (FSB 333x4=1333) and your ram is 533 (2 x 533=1066) you can increase the PSB and drop the multiplier and still have FSB 1333 but I don't think this will change too much. This way will take advantage of the ram speed. From my knowledge Core 2 duo and quad are not bandwidth hungry but you can try and see. Please guys correct if I'm wrong about the bandwidth.

What is this PSP? and where do you get the 2133 number from?
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May 27, 2009 1:43:11 PM

Quote:
2133 / 4 = 533 *2 = 1066.

Processor side bus i think.

That works, for some reason (beer I think) I read PSP, doh!
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May 27, 2009 1:46:09 PM

hefox said:
Strangerstranger, you are correct. It's the "worst" bottlenecking yet.

Arokia, even if you will increase it from 1066 to 1333, you will not fell any difference and the memory will be asyncron with the processor which for Core 2 duo is not a good think. So either you increase psp to 333 and it will be sycron with the memory (1333) or you just leave it as it is.

My suggestion is to increase the psp and have a much better pc.

Phew, I'm not that wasted, yet. [:mousemonkey]
May 28, 2009 8:20:04 AM

so i guess from this topic we conclude that

the Q9550 will also bottleneck a ddr3 1333mhz ram to 1066mhz without overclocking in a DP45SG mobo

and only core i7 is fit to run synchronously with a 1333mhz ddr3 ram
May 28, 2009 8:59:46 AM

PSB is processor front bus. Google it and you will find more about it.
2133 = 2 x 1066 which is FSB 4x 533 = 2 x (2 x 533 ram speed). I was just showing you how much the FSB has to be to use the normal ram speed.
May 28, 2009 11:15:58 AM

in other words a processor fbs has to be 2133 in order to use a ram of 1333mhz
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May 28, 2009 11:43:26 AM

Quote:
This is the worst usage of bottlenecking yet, apart from synthetics can you even tell the difference.

However, i have a question if the ram sends data twice per clock and has a clock of 667mhz, but the fsb runs at 333 but can handle 4 simultaneous transfers, does that even it self out in the end?

Seriously, apart from this question seeming like a pointless excercise does it work out having dual data rate memory at twice the speed of quad data rate FSB?

If i am asking a pointless stupid question please slap me about the face with a trout.


TBH I am not sure. I actually saw a test that was showing RAM set at a 1:1 ratio with the FSB as well as higher and lower and the best performance ended up coming with a 1:1 ratio.

So his best bet would be to either OC the Q6600 to 3GHz and set the RAM to 1333MHz or keep it at a 1066FSB and set the RAM to 1066MHz. Wont truly hurt the RAM or CPU either way.
May 28, 2009 12:16:15 PM

Not really. The ram memory speed was 1066 mhz (533 mhz) but was working at PSB's processor (266 or 333).
So if he will OC his cpu to 3 ghz that means his FSB it will 1333 (4x333)so the ram speed will be 667 (2x333) if the ratio is 1:1. The ram speed will drop from 1066 to 667 but at least it will support better timmings.
May 28, 2009 12:20:49 PM

Relax Strangestranger. Nobody is born with knowledge and maybe we are the only persons that can tell him this things. Nobody is forcing you to reply.
Arokia, understand that the only benefit that DDR3 will bring is at higher speed.
May 28, 2009 1:49:05 PM

Or maybe english is not the first language, like me.
Anyway you are right about the bottlenecking. Here is not case of bottlenecking.
I think he actually is refering that the ram memory is not used at full capacity. But not always the speed is essential, the timmings are also important.
Maybe with the time he will learn more things about pc's and he will understand better.
May 28, 2009 6:00:56 PM

guy lets talk about sock and only stock clocks here (no overclocking)

stranger stranger i took your advice and started reading the whole thread from the beginning and also refered many other articles

from what i have learnt from u guys are the following

if a processors FSB is 1333mhz that is for a quad core the data rate is 333mhz because (333*4=1333)

so the ram will use the porcessors fsb ie 333mhz

and so for a ddr3 ram it will be (333*2=666 or 667mhz) because of dual data rate

so thus the q9550 quad core basically uses only 667mhz speed of the ram even though it is ddr3 1333mhz

so a quad core processor should have an fsb of 533mhz (4*533=2132) to be sync with 1066mhz of ram

and a processor should have an fsb of 667mhz (4*667=2666) to be sync with 1333mhz of ram

correct me if i'm wrong

thanks in advance
May 28, 2009 6:57:08 PM

i might be wrong because i think the above statements posted by me apply only for ddr2 and not ddr3
May 30, 2009 4:37:58 PM

if a processors FSB is 1333mhz that is for a quad core the data rate is 333mhz because (333*4=1333)

so the ram will use the porcessors fsb ie 333mhz

and so for a ddr3 ram it will be (333*2=666 or 667mhz) because of dual data rate

so thus the q9550 quad core basically uses only 667mhz speed of the ram even though it is ddr3 1333mhz

so a quad core processor should have an fsb of 533mhz (4*533=2132) to be sync with 1066mhz of ram

and a processor should have an fsb of 667mhz (4*667=2666) to be sync with 1333mhz of ram


********guys can anyone tell me if this statement is true for ddr2 and ddr3 or it applies only for ddr2************
July 3, 2009 10:59:06 AM

arokia said:
if a processors FSB is 1333mhz that is for a quad core the data rate is 333mhz because (333*4=1333)

so the ram will use the porcessors fsb ie 333mhz

and so for a ddr3 ram it will be (333*2=666 or 667mhz) because of dual data rate

so thus the q9550 quad core basically uses only 667mhz speed of the ram even though it is ddr3 1333mhz

so a quad core processor should have an fsb of 533mhz (4*533=2132) to be sync with 1066mhz of ram

and a processor should have an fsb of 667mhz (4*667=2666) to be sync with 1333mhz of ram


********guys can anyone tell me if this statement is true for ddr2 and ddr3 or it applies only for ddr2************



See dude this statement is true only for DDR-2 chips,For a DDR-3 chip,u need to divide it's clock freq by 4,ie. a 1333 Mhz FSB is in full sync with a 1333MHz DDR-3 RAM.And no bottlenecking is there as a memory can never ever be limited by a CPU atleast.And also,CPU cannot limit RAM's freq as there are other ratios also.Finally,
A CPU is much faster than a RAM.
For reference,go to the following link:
http://www.tomshardware.com/forum/240001-29-howto-overc...
!