E5200 Overclocking Questions

[pastymuncher]

Trust Gigabyte to have secret hidden memory options

The value in System Memory Multiplier is "3.33C" and the FSB Strap is "Auto"

You have both?? Usually you have one or the other depending on manufacturer. My Gigabyte P35 DS3R has System Memory Multiplier and my Asus P5E has FSN Strap To NB. Basically they are both the same as they allow you to set the memory dividers. You then select the actual memory speed under Dram Frequency. You have to keep adjusting them because as you increase the fsb you increase the ram speed. Ideally you want the ram to run at it's stock speed, or as close as possible to it.

 

[Kona*]

You have both?? Usually you have one or the other depending on manufacturer. My Gigabyte P35 DS3R has System Memory Multiplier and my Asus P5E has FSN Strap To NB. Basically they are both the same as they allow you to set the memory dividers. You then select the actual memory speed under Dram Frequency. You have to keep adjusting them because as you increase the fsb you increase the ram speed. Ideally you want the ram to run at it's stock speed, or as close as possible to it.

How Odd. The GA-EP43-DS3 has DRAM Frequency (called Memory Frequency in the EP43) grayed out, you cant change it at all! It does change when you use the Memory Multiplier though. It's really confusing me now I thought I had it all figured out earlier!

 

[Kona*]

Bit of an update.

System is prime stable at stock. This is what I have managed to get out of it:

CPU Clock Ratio: 11 X
Fine CPU Clock Ratio: +0.5
CPU Host Frequency: 266MHz
(G)MCH Frequency Latch: 266MHz
System Memory Multiplier: 3.00A
Memory Timings: 6-6-6-18

CPU Vcore: 1.3V
CPU Termination: 1.260V

MCH Core: 1.3V
DRAM Voltage: 2.1V
DRAM Termination: Auto (0.900)

This gives me a clock speed of 3.06GHz and the memory running at 800MHz - and its prime stable!

Now then, the system point blank refuses to boot when I set the MCH Frequency Latch to anything other than 200MHz, 266MHz or Auto. Even if the memory is running at 800MHz when I select the appropriate FSB & Multiplier. Do you think this could be an issue with my Motherboard or RAM? Or is this the limit of my ram? Its not the best RAM for overclocking really!

Last but not least, if this is the limit of my RAM - are the above voltages safe to run 24/7? Also, do I need to up the DRAM Termination as I raised the DRAM Voltage above stock (1.8V)?

Cheers,

Craig

 

[Kona*]

Well, I have to laugh at myself... My system wasn't booting because I didn't know (or should I say, didn't realise) that you needed to set the CPU FSB and FSB Strap to the same setting and use the correct multiplier. I was just picking which one I wanted at random and using odd FSB's.

My system now boots with the CPU FSB & FSB Strap at 200, 266 and 333MHz FSB with the CPU at 3.0GHz - Still can't get it to boot with the CPU FSB & FSB Strap at 400MHz but I *think* this may be because my CPU's default FSB is 200 and it just doesn't like running at 400Mhz, could that be right?

At the moment it's fully prime stable at 3.06GHz (266X11.5) and memory timings at 5-5-5-18, the memory doesn't really like anything but stock speeds but what can you expect - It wasn't exactly the most expensive memory

It's all part of the learning curve I suppose If some kind soul could cast a beady eye over my post above and let me know about the voltages that would be great. Thanks for all the help so far chaps.

Craig

 

[Banny]

why wont it do 12.5 x 266, should do that easy, if not you got very unlucky.
You got no hope of 400 fsb, not sure if any board will push a e5200 to that, but dont quote me on that.

 

[pastymuncher]

Well, I have to laugh at myself... My system wasn't booting because I didn't know (or should I say, didn't realise) that you needed to set the CPU FSB and FSB Strap to the same setting and use the correct multiplier. I was just picking which one I wanted at random and using odd FSB's.

My system now boots with the CPU FSB & FSB Strap at 200, 266 and 333MHz FSB with the CPU at 3.0GHz - Still can't get it to boot with the CPU FSB & FSB Strap at 400MHz but I *think* this may be because my CPU's default FSB is 200 and it just doesn't like running at 400Mhz, could that be right?

At the moment it's fully prime stable at 3.06GHz (266X11.5) and memory timings at 5-5-5-18, the memory doesn't really like anything but stock speeds but what can you expect - It wasn't exactly the most expensive memory

It's all part of the learning curve I suppose If some kind soul could cast a beady eye over my post above and let me know about the voltages that would be great. Thanks for all the help so far chaps.

Craig

There is no way you are going to get a E5200 at 400fsb. You have to make the most of the high multiplier with these chips just as Banny says. Mine is prime stable at 3.6Ghz (12.5x288) although it will boot into windows and is useable at 4Ghz (not prime stable though). I have given up trying to get it any further now. Concentrating on getting my E8500 further in my main rig.

 

[blamic]

Try these settings

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: [Auto]
CPU Clock Ratio ...........................:12x
Fine CPU Clock Ratio.....................:+0.5
CPU Frequency .............................:3.20Ghz (256x12.5)

Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: 256 Mhz
PCI Express Frequency (Mhz) .........: 101 Mhz
C.I.A.2 ...........................................: Disabled]

DRAM Performance Control
Performance Enhance...................: [Standard]
X.M.P………………………………………………..: [Auto]
(G)MCH Frequency Latch...............: [Auto[
System Memory Multiplier ..............:[3.00A]
Memory Frequency (Mhz) ...............:800 800
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time........................: 5 [5]
tRCD ......................................... 5 [5]
tRP'........................................... 5 [5]
tRAS.......................................... 18 [18]
Advanced Timing Control
tRRD........................................... 3 [Auto]
tWTR.......................................... 3 [Auto]
tWR............................................ 6 [Auto]
tRFC........................................... 52 [Auto]
tRTP........................................... 3 [Auto]
Command Rate (CMD) ....................:0 [Auto]

Motherboard Voltage Control

CPU
CPU Vcore….……….........................: 1.3v
CPU Termination…..... ......................:1.2v
CPU PLL………………….....................:1.5v
CPU Reference.…………........................:Auto
MCH/ICH
MCH Core……………....1.2v
MCH Reference….…….Auto
MCH/DRAM Ref.…...... Auto
ICH I/O……………….....Auto
ICH Core…………...……1.2v

DRAM
DRAM Voltage ……....1.90v
DRAM Termination .…Auto
Channel A Reference Auto
Channel B Reference Auto

They are stable, 3.2ghz for your cpu and 800mhz for memory. My one is pc8500 but i cant get it to run anywhere close 1066 even with voltage up to 2.2v

 

[blamic]

Hello all,

I'm testing new settings, cpu @ 3.5ghz with vcore @ 1.4v in bios, memory @ 933 Mhz with 2.2v, and multi set to 280. Hope that helps you to get the overclock you want