Overclock.net › Forums › AMD › AMD CPUs › Question concerning HTT
New Posts  All Forums:Forum Nav:

Question concerning HTT

post #1 of 15
Thread Starter 
Hi,i've read alot of info on here and there's alot stuff that I learned.. I think I'am going to start spending alot of time here, lol
Anyways, my question is..

Whenever I overclock my FSB I can't seem to set my HTT over 400mhz, why is that?system doesn't boot.

I've tried to lower the speed of my ram to 400mhz @ 2.1V
I raised my VCC to 1.25
I can't seem to be able to find a setting to raise my VDD anywhere in my BIOS

I've gotten my FSB to 257 but i lowered my CPU multiplier so i can try to find my MB's MAX FSB and that was about it.
I would like to be able to set it at 250 FSBx4 HTT=1000

Any help/advice would be appreciated for a noob like me.
post #2 of 15
I think the Giga MBs use the 1000, 800, 600, 400 where as most other MB BIOS refer to the 5x, 4x, 3x, 2x
So
5x or 1000
4x or 800
3x or 600
2x or 400

I think you need to use the Ctrl/F1 for the advanced options.
    
CPUMotherboardGraphicsRAM
X4 965 ASUS M4A79 Deluxe 9800GTx2 2x2G OCZ Reapers 
Hard DriveOptical DriveOSMonitor
500G WD Black LiteOn CD/DVD R/W Win7 64 22'' ws Acer AL2223W 
KeyboardPowerMouse
MS KU462 Natural SS DA750 MS 5 button 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
X4 965 ASUS M4A79 Deluxe 9800GTx2 2x2G OCZ Reapers 
Hard DriveOptical DriveOSMonitor
500G WD Black LiteOn CD/DVD R/W Win7 64 22'' ws Acer AL2223W 
KeyboardPowerMouse
MS KU462 Natural SS DA750 MS 5 button 
  hide details  
Reply
post #3 of 15
Thread Starter 
Quote:
Originally Posted by The Duke View Post
I think the Giga MBs use the 1000, 800, 600, 400 where as most other MB BIOS refer to the 5x, 4x, 3x, 2x
So
5x or 1000
4x or 800
3x or 600
2x or 400

I think you need to use the Ctrl/F1 for the advanced options.
I have access to the 200,400,600,800,1000 options.. but it's when I start to overclock I run into problems..

Example.. I put 225 FSB and try to put my HTT@4x (which would give me 900mhz) I also underclock my RAM just to be sure @400mhz. As soon as I save and restart.. the system doesn't even pass post boot, I have to reset the bios.
I can only boot if the HTT is 200 or 400 mhz, not higher.. but that only gives me 225-450mhz HTT
I can seem to go higher
post #4 of 15
I think your confusing the CPU and the RAM multiplyers.

The RAM's HT multiplyers... 5x or 1000 per your MB
5x200=1000 (the red 200 = the default speed of the CPU bus)
Do you see the corelation?


"I put 225 FSB and try to put my HTT@4x (which would give me 900mhz)"
That 4x you refer to is the CPU's multiplyer.
Or am I reading your post incorrectly?

Basically in the RAM's HT multiplyer...
use 800 for a CPU bus speed to about 260ish
drop to 600 for above that.

Your default CPU multiplyer should be "10x"

This may help....
Why the CPU and RAM multiplyer gets confusing...
The CPU's bus speed defaults @ 200 and is multiplyed by, in yur case 10x.
As you increase the 200 bus speed on the CPU the RAM's base speed also increases. That effects the RAM in two ways
1. The RAM will get OCed to a point of instability and there are way of dealing with that. Setting the RAM's base speed to a lower default... I'll get into that later
2. The RAM's HT over all speed also gets effected. That is where the default 5x or 1000, 4x or 800 etc... comes into play. To maintain stability in this part, you reduce the HT multiplyer.
4x or 800 up to about a 260MHz CPU bus speed
3x or 600 above that.

1 & 2 are different but related and use different multiplyers.

    
CPUMotherboardGraphicsRAM
X4 965 ASUS M4A79 Deluxe 9800GTx2 2x2G OCZ Reapers 
Hard DriveOptical DriveOSMonitor
500G WD Black LiteOn CD/DVD R/W Win7 64 22'' ws Acer AL2223W 
KeyboardPowerMouse
MS KU462 Natural SS DA750 MS 5 button 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
X4 965 ASUS M4A79 Deluxe 9800GTx2 2x2G OCZ Reapers 
Hard DriveOptical DriveOSMonitor
500G WD Black LiteOn CD/DVD R/W Win7 64 22'' ws Acer AL2223W 
KeyboardPowerMouse
MS KU462 Natural SS DA750 MS 5 button 
  hide details  
Reply
post #5 of 15
Thread Starter 
Quote:
Originally Posted by The Duke View Post
I think your confusing the CPU and the RAM multiplyers.

The RAM's HT multiplyers... 5x or 1000 per your MB
5x200=1000 (the red 200 = the default speed of the CPU bus)
Do you see the corelation?


"I put 225 FSB and try to put my HTT@4x (which would give me 900mhz)"
That 4x you refer to is the CPU's multiplyer.
Or am I reading your post incorrectly?

Basically in the RAM's HT multiplyer...
use 800 for a CPU bus speed to about 260ish
drop to 600 for above that.

Your default CPU multiplyer should be "10x"
I might be explaining it wrong..ok..

for my CPU multiplier=10x
My DDR2 Frequency is at 800mhz
then my Hypertransport (MCP55 to AM2) cannot be set over 400mhz IF i'am going to overclock my CPU frequency (fsb)

This is what my BIOS looks like
http://www.viperlair.com/images/revi...k9nd/bios1.jpg
http://www.viperlair.com/images/revi...k9nd/bios2.jpg
post #6 of 15
Thread Starter 
Quote:
Originally Posted by
This may help....
Why the CPU and RAM multiplyer gets confusing...
The CPU's bus speed defaults @[COLOR=Red
200 and is multiplyed by, in yur case 10x.
As you increase the 200 bus speed on the CPU the RAM's base speed also increases. That effects the RAM in two ways
1. The RAM will get OCed to a point of instability and there are way of dealing with that. Setting the RAM's base speed to a lower default... I'll get into that later
2. The RAM's HT over all speed also gets effected. That is where the default 5x or 1000, 4x or 800 etc... comes into play. To maintain stability in this part, you reduce the HT multiplyer.
4x or 800 up to about a 260MHz CPU bus speed
3x or 600 above that.

1 & 2 are different but related and use different multiplyers.

[/COLOR]
Thats my problem..
I understand that if i raise my FSB, I have to lower my Ram frequency, I did that, I tested it at 400mhz RAM frequency.
Then I lowered my HTT to 2x=400 and I have a fsb of 225.

Now that was working.. but if I tried to put 3xHTT it wouldn't boot.
I don't understand because I didnt go over the ram's as i equalled it..

Doesn't this calculation work:?

250FSBx10 CPU multi=2500mhz
4x250 htt=1000mhz
this is NOT obtainable on my system for some reason.
Am i getting the whole RAM thing wrong here?? lol
post #7 of 15
Thats so different that the Ausu BIOS!
What are the other options for the LDT other than "Enable" if any?

EDIT, your math is correct... something in the NB/SB/LDT settings are a miss.

Have you tried setting the Nb to SB and SB to NB to match the HTT of "4"?
    
CPUMotherboardGraphicsRAM
X4 965 ASUS M4A79 Deluxe 9800GTx2 2x2G OCZ Reapers 
Hard DriveOptical DriveOSMonitor
500G WD Black LiteOn CD/DVD R/W Win7 64 22'' ws Acer AL2223W 
KeyboardPowerMouse
MS KU462 Natural SS DA750 MS 5 button 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
X4 965 ASUS M4A79 Deluxe 9800GTx2 2x2G OCZ Reapers 
Hard DriveOptical DriveOSMonitor
500G WD Black LiteOn CD/DVD R/W Win7 64 22'' ws Acer AL2223W 
KeyboardPowerMouse
MS KU462 Natural SS DA750 MS 5 button 
  hide details  
Reply
post #8 of 15
Thread Starter 
Quote:
Originally Posted by The Duke View Post
Thats so different that the Ausu BIOS!
What are the other options for the LDT other than "Enable" if any?
"Freqauto" has to be on disable for me to change the 200,400,600,800,1000
And "Link" is either 16-16 or 8-8
post #9 of 15
I have that same mobo and cant get over 257x9

EDIT: I just read again and its a different chipset, well we have the same cpu I dont really know what would stop it from going past 257
     
CPUMotherboardGraphicsRAM
i7-4790 Gigabyte H97N-wifi ZOTAC 1060 AMP! 6Gb 8gb Corsair XMS3 1600 
Hard DriveOptical DriveCoolingCooling
integral 480gb ssd ASUS BD combo AC Freezer i30 1x 140mm Fractal R3 
OSMonitorKeyboardPower
Win 10 Pro BenQ GL2250HM Venom warrior mech. Corsair CX550M 
CaseMouseMouse PadAudio
Fractal Design Core 500 Corsair Sabre RGB venom gaming surface Realtek onboard 
AudioAudioOther
Harmon/Kardon HK3380 Sony SS-H2500  Aten CS682 KVM 
CPUMotherboardGraphicsRAM
Pentium D 915  Dell USFF Intel GMA 950 4gb Corsair ddr2 
Hard DriveOptical DriveCoolingCooling
WD Caviar 80gb sata II  Slim dvd rw Stock Copper Heatpipe  2x 60mm Sunnon fans 
OSMonitorMonitorKeyboard
Win 2k Pro SP4. HDMI compatible Panasonic AE700 PJ Logitech k400 
PowerCaseMouseAudio
220W external Optiplex USFF w/ cable cover Logitech k400 Onboard SoundMAX 
CPUMotherboardGraphicsRAM
Core2 E7600 ASUS P5K Gigabyte 6600gt Silentpipe  8gb NANYA DDR2 800 
Hard DriveHard DriveCoolingCooling
4x 1TB 3.5" 250gb 2.5" Stock intel 4x Arctic F8 80mm 
OSPowerCaseOther
Advanced Server 2000 SP4 Cougar 650w Lian Li PC70 Aten CS682 KVM 
OtherOtherOther
Netgear gs105 switch 2x Silicon Image SIL3124 sataII cards Lamptron FC6 
  hide details  
Reply
     
CPUMotherboardGraphicsRAM
i7-4790 Gigabyte H97N-wifi ZOTAC 1060 AMP! 6Gb 8gb Corsair XMS3 1600 
Hard DriveOptical DriveCoolingCooling
integral 480gb ssd ASUS BD combo AC Freezer i30 1x 140mm Fractal R3 
OSMonitorKeyboardPower
Win 10 Pro BenQ GL2250HM Venom warrior mech. Corsair CX550M 
CaseMouseMouse PadAudio
Fractal Design Core 500 Corsair Sabre RGB venom gaming surface Realtek onboard 
AudioAudioOther
Harmon/Kardon HK3380 Sony SS-H2500  Aten CS682 KVM 
CPUMotherboardGraphicsRAM
Pentium D 915  Dell USFF Intel GMA 950 4gb Corsair ddr2 
Hard DriveOptical DriveCoolingCooling
WD Caviar 80gb sata II  Slim dvd rw Stock Copper Heatpipe  2x 60mm Sunnon fans 
OSMonitorMonitorKeyboard
Win 2k Pro SP4. HDMI compatible Panasonic AE700 PJ Logitech k400 
PowerCaseMouseAudio
220W external Optiplex USFF w/ cable cover Logitech k400 Onboard SoundMAX 
CPUMotherboardGraphicsRAM
Core2 E7600 ASUS P5K Gigabyte 6600gt Silentpipe  8gb NANYA DDR2 800 
Hard DriveHard DriveCoolingCooling
4x 1TB 3.5" 250gb 2.5" Stock intel 4x Arctic F8 80mm 
OSPowerCaseOther
Advanced Server 2000 SP4 Cougar 650w Lian Li PC70 Aten CS682 KVM 
OtherOtherOther
Netgear gs105 switch 2x Silicon Image SIL3124 sataII cards Lamptron FC6 
  hide details  
Reply
post #10 of 15
Thread Starter 
Quote:
Originally Posted by The Duke View Post
Thats so different that the Ausu BIOS!
What are the other options for the LDT other than "Enable" if any?

EDIT, your math is correct... something in the NB/SB/LDT settings are a miss.

Have you tried setting the Nb to SB and SB to NB to match the HTT of "4"?
Yes 4 doesnt work 3 doesnt work.. only 2 and 1 Which is pretty low

my MB manual says that the "linkwidth" (16-16) is "ht width from SB to CPU"
would lowering to 8-8 help?
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs
Overclock.net › Forums › AMD › AMD CPUs › Question concerning HTT