Overclocking Problems

[ckfordy]

I have a amd athlon 64 3800+ AM2. I overclocked to it to 2.82GHz.

I cant get it to overclock any farther. I have the voltage upped on the CPU from 1.35 to 1.4 even though CPUZ says 1.35 it says 1.4 in the bios. and i have the voltage on the ram bumped up .1 and it wont go any farther. I have upped the voltage on everything and it wont work it just randomly restarts.

and SpeedFan now has the Core temp on there and it usually is quite a bit higher then my cpu temp. do i need to worry about that or not cause my cpu temp is 28-30C idle and load gets into the 40s and the core temp is usually 50C load is in the high 50s what is the core temp and whats the difference bewteen it and the regular cpu temp.

 

[34erd]

Set a RAM divider. Also try setting the RAM command rate to 2T. If that doesn't work then your just pushing your CPU too hard for that voltage. Back it up untill its stable.

 

[ckfordy]

Set a RAM divider. Also try setting the RAM command rate to 2T. If that doesn't work then your just pushing your CPU too hard for that voltage. Back it up untill its stable.

How do i do that i have no idea how to find that in my BIOS.

 

[mrjack]

And you should set the HTT to 4, cause the CPU and mobo are designed for 1000MHz HTT:

Stock:
FSB: FSB: 200MHz
Multiplier: x12
HTT multiplier: x5
HTT: 1000MHz (5x200=1000) 200MHz

OC:
FSB: 235MHz
Multiplier: x12
HTT multiplier: x5
HTT: 1175MHz (5x235=1175)

When HTT is set to x4 it would equal >940MHz and should be more stable if you OC more.

 

[ckfordy]

And you should set the HTT to 4, cause the CPU and mobo are designed for 1000MHz HTT:

Stock:
FSB: FSB: 200MHz
Multiplier: x12
HTT multiplier: x5
HTT: 1000MHz (5x200=1000) 200MHz

OC:
FSB: 235MHz
Multiplier: x12
HTT multiplier: x5
HTT: 1175MHz (5x235=1175)

When HTT is set to x4 it would equal >940MHz and should be more stable if you OC more.

I have no idea how to set a ram divder in my BIOS it shows nothing about that. And i cant find the HTT multiplier all it has is the HTT voltage. . there is a cpu multiper that goes to X12 is that what you are talking about cause i have that set to auto. and is upping my voltage on my ram by .1 going to ruin it or not.

 

[mrjack]

The CPU multiplier is what sets the speed of the CPU itself, 12x200=2.4GHz which is your CPU's stock speed. So that's not what we're looking for. Look through your mobos manual to see if they mention anything about Hyper Transport.

 

[ckfordy]

The CPU multiplier is what sets the speed of the CPU itself, 12x200=2.4GHz which is your CPU's stock speed.

Ok so i should set that to 4 or 5 was it or is that not the HTT multiplier. and how do i set the HTT multiplier and how do i set a ram divider.

 

[Geoff]

The RAM Divider is usually set either under the Advanced Options or Chipset Configuration Page. And it may then be under the DRAM Configuration page.

There isn't an option for a divider, but what you do is manually set the speed to 200Mhz, since yours is running at ~266 now.

BTW, why did you buy really slow DDR2-533 memory for your rig?

 

[ckfordy]

The RAM Divider is usually set either under the Advanced Options or Chipset Configuration Page. And it may then be under the DRAM Configuration page.

There isn't an option for a divider, but what you do is manually set the speed to 200Mhz, since yours is running at ~266 now.

BTW, why did you buy really slow DDR2-533 memory for your rig?

Ok ill see if i can do that.

I bought the samsung ram off ebay and the other ram i got for free so thats why. and what do you mean by slow they both have a latency of 4.

 

[mrjack]

You can get DDR2-800 with a CAS latency of 4, and that's the good memory modules. Usually DDR2-800 has a CAS latency of 5. And I think Omega just wondered why you got DDR2-533 RAM when your mobo supports DDR2-800 and DDR2-667.

And I looked through the manual of your mobo on Gigabytes homepage and only thing related to HT was HT-Link voltage.

 

[ckfordy]

You can get DDR2-800 with a CAS latency of 4, and that's the good memory modules. Usually DDR2-800 has a CAS latency of 5. And I think Omega just wondered why you got DDR2-533 RAM when your mobo supports DDR2-800 and DDR2-667.

And I looked through the manual of your mobo on Gigabytes homepage and only thing related to HT was HT-Link voltage.

I know and i did buy this ram

http://www.newegg.com/Product/Product.asp?Item=N82E16820134064

but it wouldnt work in my motherboard so i just gave that ram to my dad and he put it in his dell and it worked and he gave me the ram that was from his dell and i had ram leftover from my dell so i used that. but i am planning on getting better ram sometime.

i can overclock higher when i set the ram from 533 to 400 and i can overclock from 2.82 to 2.86 anything after that and it randomly restarts.

is there anything else i can change to get my overclock higher. And is it safe to have my voltage on my cpu from 1.35 to 1.4 and i upped my voltage on my ram by .1 is that bad and can i go higher or will it ruin it.

 

[mrjack]

If you only could change the HT frequency from x5 to x4 you could get it to be more stable since you should always keep the HT frequency at what the CPU and mobo are designed for in order to avoid issues.

I have a theory on why the memory didn't work with your computer, people have reported some mobos to not work properly with memory using a voltage of 1.9V and 1.95V while working well with memory using 1.8V and 2+V.

 

[ckfordy]

If you only could change the HT frequency from x5 to x4 you could get it to be more stable since you should always keep the HT frequency at what the CPU and mobo are designed for in order to avoid issues.

Thats whats holding me back? i wonder why they didnt put that in there. and is it ok for my cpus voltage to be from 1.35 upped to 1.4 and my rams voltage is upped by .1 is that bad or good.

EDIT: just saw your edit there and if i upped the voltage on my ram that is 1.9 or 1.95 cant remeber to 2.0 would that work. and i had the kingston ram in my motherboard and i tried to install windows but it wouldnt install and when i switched it out it installed windows but then i put that memory back in and it worked and booted into windows but then i had random restarts so all i would have to do would be to up the voltage and i should be fine.

 

[mrjack]

Thats whats holding me back? i wonder why they didnt put that in there. and is it ok for my cpus voltage to be from 1.35 upped to 1.4 and my rams voltage is upped by .1 is that bad or good.

EDIT: just saw your edit there and if i upped the voltage on my ram that is 1.9 or 1.95 cant remeber to 2.0 would that work. and i had the kingston ram in my motherboard and i tried to install windows but it wouldnt install and when i switched it out it installed windows but then i put that memory back in and it worked and booted into windows but then i had random restarts so all i would have to do would be to up the voltage and i should be fine.

And about the vcore, the voltage for your CPU is 1.35-1.4V, so that should be ok. And I don't know about the vram, since you're using cheaper RAM so I'm not sure how easily it could die.

I'm not 100% sure about the memory but that could be related to the voltage it uses. I'm gonna do some more research, so don't go doing anything just yet.


Update:

I might have found the reason for the Kingston HyperX RAM not working. I found this on Gigabyte's homepage on your mobos specifications:

Memory

1. 4 DDR2 DIMM memory slots (supports up to 16GB memory)(Note 1)
2. Supports dual channel DDR2 800/667/533/400 DIMMs
3. Supports 1.8V DDR2 DIMMs

Notice that it supports 1.8V DDR2, and your Kingston HyperX is 1.95V, so a way to get it to work should be by increasing the vram to 1.95V. But I don't take any responsibility if you try this. And according to your mobos manual you can increase the vram by 0.1, 0.2 or 0.3V. Would have been nice with smaller increments but setting it to 2.0V should make the memory work properly.

 

[ckfordy]

I'm not 100% sure about the memory but that could be related to the voltage it uses. I'm gonna do some more research, so don't go doing anything just yet.

And about the vcore, the voltage for your CPU is 1.35-1.4V, so that should be ok. And I don't know about the vram, since you're using cheaper RAM so I'm not sure how easily it could die.

Ok i wasnt planning on switching the memory anyway until i was sure. If that ram does die ill probably buy 2X1GB sticks of higher quality ram.

EDIT: so if it supports 1.8 volt and my ram is 1.95 why would i have to up it back up to 1.95 if the motherboard supports only 1.8 it cant go higher or am i wrong. and i understand about the not taking responsibility thing if i did it and ruined it would be my fault not yours cause i did it.

 

[mrjack]

Your mobo supports by default 1.8V memory, but it can give more vram to the memory thus it should make it possible to use memory with a higher voltage. Understand what I mean?

 

[ckfordy]

Your mobo supports by default 1.8V memory, but it can give more vram to the memory thus it should make it possible to use memory with a higher voltage. Understand what I mean?

Yup now i understand what you mean. Now i am going to buy some new ram for my computer would that help with the overclocking or not?

 

[mrjack]

Maybe, since cheaper memory can't always run at a higher FSB. But that can often be dealt with by locking the RAM clock frequency.

 

[ckfordy]

Maybe, since cheaper memory can't always run at a higher FSB. But that can often be dealt with by locking the RAM clock frequency.

I'll probably just buy more ram and leave the ocing alone cause i think a 400 mhz overclock is pretty good.