Overclocking Q9550 with 8 G.B. Ram on Ep45T-UD3R
Last response: in Overclocking
Hello,
iam having a problem when am overclocking my Q9550 to 3.8 the ram freq. goes up to 1750 mhz wich prevent the pc to boot up is there anyway to keep my ram freq. 1333 mhz like its defualt ?
iam having a problem when am overclocking my Q9550 to 3.8 the ram freq. goes up to 1750 mhz wich prevent the pc to boot up is there anyway to keep my ram freq. 1333 mhz like its defualt ?
More about : overclocking q9550 ram ep45t ud3r
Q9550s Dont have unlocked multipliers.
As far as I remember OCing the Q9xxx is the same as OCing the Q6xxx
When you bump up the FSB it is linked directly with the Memory. There should be a Setting for memory link as 'Linked' 'Auto' and 'Unlinked'
Under 'Linked' you should be able to choose the ratio.
Unlinked is the most unstable of all - Try going for linked - and find a Ratio that suits you. If you have to Underclock your RAM, dont worry, the Overclock on the CPU is a massive performance boost and you wont drop a single FPS from having your RAM underclocked slightly.
As far as I remember OCing the Q9xxx is the same as OCing the Q6xxx
When you bump up the FSB it is linked directly with the Memory. There should be a Setting for memory link as 'Linked' 'Auto' and 'Unlinked'
Under 'Linked' you should be able to choose the ratio.
Unlinked is the most unstable of all - Try going for linked - and find a Ratio that suits you. If you have to Underclock your RAM, dont worry, the Overclock on the CPU is a massive performance boost and you wont drop a single FPS from having your RAM underclocked slightly.
Related ressources
- GA-EP45-UD3P and G.Skill 8 gig Ram Issue - Forum
- 1st time overclocking , Q9550 with 8 GB RAM - Forum
- P45 overclocking with q9550 + 16 gb DDR2 - Forum
- overclocking q9550 ram help - Forum
- Q9550 + 8GB + OC try - Forum
Best solution
deadjon, G'byte motherboards do not have 'Linked', 'Auto' and 'Unlinked' settings like the nVidia chipsets, for example.
swifty, I am guessing that you have DDR3-1333 or DDR3-1600 (advertised) RAM. (Sure wish I knew more about your memory.![:)]( ":)")
)
At 3.8 GHz (I bet you have an E0 core), you are running your FSB at 422 MHz. At an FSB:RAM ratio of 1:1 (most stable), your memory clock would be 1688 MHz. DDR3 RAM - each bus cycle generates 4 memory clock cycles.
The simple solution is to go into the BIOS and change the System Memory Multiplier from Auto to 3.0. You should see your memory clock drop to around 1266 MHz which will put your memory within its capabilities. It will cost you a little speed in memory i/o but Core2 CPU's are relatively insensitive to that. I suspect it is because of the relatively large CPU cache, but I don't know for certain.
The problem with this is that you are running your memory a little slower than the FSB.
Now, if you do have DDR3-1600 RAM, you are trying to run it a little beyond its capability. Try this:
Set your System Mem Mult to 4.0., giving you an FSB:RAM ratio of 1:1. Take the memory voltage off Auto and increase it to 1.65 volts if it is not there already. Then try to boot. 1.65 volts is a safe voltage for the RAM chips and because the Q9550 does not have an Integrated Memory Conroller, you will not damage the CPU chip.
If that doesn't work or you have DDR3-333 RAM, try this old overclocker trick:
Sys Mem Mult to 4.0, RAM voltage to 1.65 volts and relax the memory timings one set of numbers. Proportion should be 1-1-1-3.
For example, if your timings are 7-7-7-20 or 21, change to 8-8-8-24 or even 9-9-9-27.
Make sure you do some stress testing because you are up around the ragged edge of instability.
swifty, I am guessing that you have DDR3-1333 or DDR3-1600 (advertised) RAM. (Sure wish I knew more about your memory.
)At 3.8 GHz (I bet you have an E0 core), you are running your FSB at 422 MHz. At an FSB:RAM ratio of 1:1 (most stable), your memory clock would be 1688 MHz. DDR3 RAM - each bus cycle generates 4 memory clock cycles.
The simple solution is to go into the BIOS and change the System Memory Multiplier from Auto to 3.0. You should see your memory clock drop to around 1266 MHz which will put your memory within its capabilities. It will cost you a little speed in memory i/o but Core2 CPU's are relatively insensitive to that. I suspect it is because of the relatively large CPU cache, but I don't know for certain.
The problem with this is that you are running your memory a little slower than the FSB.
Now, if you do have DDR3-1600 RAM, you are trying to run it a little beyond its capability. Try this:
Set your System Mem Mult to 4.0., giving you an FSB:RAM ratio of 1:1. Take the memory voltage off Auto and increase it to 1.65 volts if it is not there already. Then try to boot. 1.65 volts is a safe voltage for the RAM chips and because the Q9550 does not have an Integrated Memory Conroller, you will not damage the CPU chip.
If that doesn't work or you have DDR3-333 RAM, try this old overclocker trick:
Sys Mem Mult to 4.0, RAM voltage to 1.65 volts and relax the memory timings one set of numbers. Proportion should be 1-1-1-3.
For example, if your timings are 7-7-7-20 or 21, change to 8-8-8-24 or even 9-9-9-27.
Make sure you do some stress testing because you are up around the ragged edge of instability.
Related ressources:
- ForumAsus P 8 Z68-V vs Gigabyte GA-Z68X-UD3H-B3
- ForumIntel core 2 quad q9550 overclocking problems
- ForumOverclocking Intel Q9550 and maybe other hardware
- ForumQ9550 overclocking ?
- ForumUndervolting and Overclocking Q9550
- ForumWill going from PentiumD 2. 8 GHz to E8600 or Q9550 improve gaming fps?
- ForumHelp Overclocking a Q9550
- ForumEP45T-UD3LR + 2X2 GB DDR3 + Q9550 + HIS 5770 ICEQ5 TURBO is Bottleneck?
- ForumOverclocking Q9550 on ASRock P45R2000-WiFi
- ForumI5 3570K + Z77 PRO3
- ForumHigh Turbo Ratio vs Overclocking Sandybridge
- ForumI7 2600k overclocking
- ForumBeginner overclocking for mid range rig...
- ForumOverclocking from 3.2ghz to 3.8ghz
- ForumOverclocking 980 (non X) to 4.0 ghz templates?
- More resources
Read discussions in other Overclocking categories
!
