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First Time Overclockign

post #1 of 3
Thread Starter 
Alright, first time overclocking so I am doing it on my crappy test rig before I move onto my E8400. System infos should be in my sig?
I've upped the FSB and Vcore to the best I can with vcore set at highest recommended range.
Key infos:
CPU: Intel Celeron D 345 (148x23=3.4ghz)
Vcore: 1.400v
Temp (Load): 59C~60C

Umm didn't touch the RAM settings but it automatically changes with FSB, so right now its on:
DRAM frequency: 222.3mhz
FSBRAM: 2:3
cl-trcd-trp-tras 5-4-4-12
vdimm:+0 (1.8v)

When I go into the Bios, I can find only a few fields:

CPU Host Frequency [100~600]
CPI Express Frequency [I've set this to asyc which by description should be 100]
System Memory multiplier [3, 4, auto]
Memory Frequency - greyed
DIMM OverVoltage Control
FSB Overvoltage Control
CPU Voltage Control [1.4000V]
Normal CPU VCore - 1.38750V

With Ctrl + F1 I get some additional fields:
FSB DeOverVoltage Control
CPU GTLREF Ratio Control [0.67, 0.65, 0.63, 0.615] (set on 0.67 right now)

Advance Chipset Features:
-CAS Latency
-DRAM RAS# to CAS# Delay
-DRAM RAS# Precharge
-Active to Precharge Delay
-Refresh Mode Seclect


====
====

So, QUESTIONS:
1. I've set the FSB as high as I could without crashing, any higher the motherboard would revert back to the default 133mhz. I've tried upping the vCore to 1.41v and upping the FSB, but the mobo reset. What should I do now?
2. The RAM I use is Kingston 1GB PC2-5300 (333mhz) rated at 1.8v. How far can I push the vDimm?

3. And the Memory Frequency shouldn't exceed 666(nice number ) right? Due to DDR and the rated frequency given that I am not going to OC the RAM. Should I OC the RAM? It's my first time OC-ing... and Kinda confused just with the CPU. I was told that having less variables makes it easier.

4. Where is the VTT, VMCH? Or are they not available on this mobo?

5. When should you adjust the VTT, VMCH If you can adjust?

6. What are the bolded terms and when to use/adjust them?

I hope all this make sense... It is my first time trying. Thanks in advance
Edited by xmrflipflop - 12/27/10 at 12:00pm
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post #2 of 3
the vcore shouldnt be tht high...ive overclocked my i7 to 4.0 on 1.3V nd my E8200 to 3.8Ghz on 1.25V. To overclock even further would would need a high performance cooling system such as water or even really good air cooling. But your motherboard can only handle so much to where it crashes. Happens to my E8200 when i go pass 1900MHz on FSB. If you can try upping the volts on the FSB a little. Overclock the ram first to a stable clock without crashing then do the CPU(assuming tht ur memory timings and volts are correct). Then do the CPU.

CAS Latency is the delay time between the moment a memory controller tells the memory module to access a particular memory column on a RAM memory module, and the moment the data from given array location is available on the module's output pins. In general, the lower the CAS latency, the better.

DRAM RAS# to CAS# Delay isaccessing data first requires identifying a row using a signal called Row Address Strobe (RAS) and then a column using Column Address Strobe (CAS), to uniquely identify a specific memory location. A pause is required between the RAS signal and the CAS signal, to be sure that memory is correctly addressed. This RAS-to-CAS delay normally consumes two or more clock cycles.

DRAM RAS# Precharge RAS precharge is sometimes referred to as TRP (time RAS Precharge) and indicates how fast your RAM can terminate the access of one row and start accessing another. Typical settings for RAS precharge are similar to TRCD. TRP also affects performance, but like TRCD, it is not as critical as CAS Delay.

Active to prechaarge delay is more commonly referred to as TRAS (you should have caught on by now that T is for time) and specifies the number of CPU cycles between getting a memory bank (our spreadsheet) ready for access and then closing it. TRASgenerally affects system stability more than performance, but you should strive to run at the lowest number possible while remaining stable in your overclock. Typical values for TRAS are much higher than the others and range from 5 to 8 for decent DDR and from 8 to 12 for DDR2 depending on the speed used.


Those terms and anyothers can be found here:
http://www.overclock.net/faqs/26706-...s-dummies.html
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post #3 of 3
Thread Starter 
I'm actually not worried about vcore. Because Intel quotes that the suitable vcore range is from 1.250~1.40v. This range is different for the other CPUs. And to be honest, I don't think I've overclocked the chip a lot. FSB from 133 default to 148 x 23 => 3.06 to 3.4ghz. That's about 13% increase.

In continuation to the opening post, my first 5 questions have still not been answered.
Quote:
So, QUESTIONS:
1. I've set the FSB as high as I could without crashing, any higher the motherboard would revert back to the default 133mhz. I've tried upping the vCore to 1.41v and upping the FSB, but the mobo reset. What should I do now?
2. The RAM I use is Kingston 1GB PC2-5300 (333mhz) rated at 1.8v. How far can I push the vDimm?

3. And the Memory Frequency shouldn't exceed 666(nice number ) right? Due to DDR and the rated frequency given that I am not going to OC the RAM. Should I OC the RAM? It's my first time OC-ing... and Kinda confused just with the CPU. I was told that having less variables makes it easier.

4. Where is the VTT, VMCH? Or are they not available on this mobo?

5. When should you adjust the VTT, VMCH If you can adjust?
Considering G0T CaMeL T0ES's suggestion of Oc-ing the ram, please do answer Question 2 regarding the vDIMM and also suggested suitable timings and timing ranges for the RAM. Then again, question 3, at this stage do I have to overclock my ram in order to further increase my FSB? Are there any other alternatives?

Thanks in advance.
Main Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Duo E8400 E0 Gigabyte EP45-UD3LR Gigabyte GTS 250 6GB Hynix 
Hard DrivePowerCaseMouse
1TB 7200rpm Cooler Master 550W Thermaltake V3 Black Microsoft Sidewinder X8 
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Main Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Duo E8400 E0 Gigabyte EP45-UD3LR Gigabyte GTS 250 6GB Hynix 
Hard DrivePowerCaseMouse
1TB 7200rpm Cooler Master 550W Thermaltake V3 Black Microsoft Sidewinder X8 
  hide details  
Reply
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