Overclock.net › Forums › Intel › Intel CPUs › Higher FSB vs high multi
New Posts  All Forums:Forum Nav:

Higher FSB vs high multi

post #1 of 21
Thread Starter 
So... I has my e6600 at 3.6ghz. now there are about 3 different ways "I" can reach 3.6ghz.
1: set FSB to 400 with a multiplier of 9= 3600Mhz or 3.6ghz
2: set FSB to 450 with a multiplier of 8= 3600Mhz or 3.6ghz
3: set FSB to 514 with a multiplier of 7= around 3600Mhz or around 3.6ghz

will one setting perform better than the other? such as 400fsbx9 vs 450fsbx8 ?
will one setting allow me to lower voltages on the cpu?
looking for the best performace for gaming.
MENTLEGEN
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel 3770k @ 4.2 Asrock z77 extreme4 Gigabyte G1 GTX 1080 Samsung Wonder Ram pc12800 4gx4 (16g) 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO N/A Corsair h100i Windows 10 
MonitorKeyboardPowerCase
Crossfire 27QHD IPS @ 96hz Ducky Shine 3 ~ Soon to be Whitefox Seasonic 750W Gold CM Stryker 
MouseMouse PadAudio
Zowie EC1-A iCEMAT Audio Technica ATH-A900x 
  hide details  
Reply
MENTLEGEN
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel 3770k @ 4.2 Asrock z77 extreme4 Gigabyte G1 GTX 1080 Samsung Wonder Ram pc12800 4gx4 (16g) 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO N/A Corsair h100i Windows 10 
MonitorKeyboardPowerCase
Crossfire 27QHD IPS @ 96hz Ducky Shine 3 ~ Soon to be Whitefox Seasonic 750W Gold CM Stryker 
MouseMouse PadAudio
Zowie EC1-A iCEMAT Audio Technica ATH-A900x 
  hide details  
Reply
post #2 of 21
A lower multi will give you better overall performance rather than having a high multi and a lower fsb. Voltage wont change regardless of which one you use. If it requires more voltage, its going to with a high multi or a high fsb.

I would go with #2 higher FSB and lower multi

#2 so you dont have to put your ram on so much of a divider.
Desktop
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q9550 EVGA 780SLi EVGA GTX285SSC 4GB OCZ Reaper HPC Edition 
Hard DriveOptical DriveOSPower
150GB Velociraptor x2 - RAID0 2 - Samsung Write Master's Window 7 64-bit 750 Watt OCZ 60 AMPs on +12v 
CaseMouse
LIAN LI PC-V2110B Black Logitech G3 
  hide details  
Reply
Desktop
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q9550 EVGA 780SLi EVGA GTX285SSC 4GB OCZ Reaper HPC Edition 
Hard DriveOptical DriveOSPower
150GB Velociraptor x2 - RAID0 2 - Samsung Write Master's Window 7 64-bit 750 Watt OCZ 60 AMPs on +12v 
CaseMouse
LIAN LI PC-V2110B Black Logitech G3 
  hide details  
Reply
post #3 of 21
I would suggest pushing your FSB as far as your RAM will go. You may well need to run tests at different combinations of FSB, RAM frequency, and RAM timings. While Intel systems generally perform best at high frequencies, there will be a point at which loosing RAM timings for the sake of higher FSB results in lessened performance.

In short, there's no one exact answer as each group of components will interact just a little differently.
Sig rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Q6600 G0 23A Asus P5K Deluxe Wifi HD 3870 2x2 GB G.Skill DDR2-800 
Hard DriveOptical DriveOSMonitor
2x250 GB Seagate RAID 0 + 320 GB Seagate Samsung SATA DVD Windows XP Pro/Vista Ultimate 64 bit Viewsonic VA2012wb 
KeyboardPowerCaseMouse
Saitek Eclipse Corsair HX620 Lian Li V2000b Logitech G7 
  hide details  
Reply
Sig rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Q6600 G0 23A Asus P5K Deluxe Wifi HD 3870 2x2 GB G.Skill DDR2-800 
Hard DriveOptical DriveOSMonitor
2x250 GB Seagate RAID 0 + 320 GB Seagate Samsung SATA DVD Windows XP Pro/Vista Ultimate 64 bit Viewsonic VA2012wb 
KeyboardPowerCaseMouse
Saitek Eclipse Corsair HX620 Lian Li V2000b Logitech G7 
  hide details  
Reply
post #4 of 21
This has been a hot topic of debate on some other forums. Someone a while back posted a link to a website that showed the 'strap' selections on the P5b-DL. What it indicated was that there are certain combinations of fsb,ram speed and cpu multi, that can outperform a higher fsb's clock. This is reportedly due to the latency changes that occur the NB during the strap resets.

ie-> my rig @ 370fsb, 9x multi = 3.333ghz scored better on all of my benchmark tests and AM3 especially, gaining 4000 points over the following @ ......

462fsb, 7x multi = 3.234ghz ....

Granted, its not quite the same clock speed....but still 100mhz FSB increase for worse results = booboo. I have noticed my best scores, times, benchmarks...all at higher multi's. Long story, somewhat short, -> 370mhz is almost at the tippy-top of its 'strap', the next latency change for the stap reset, comes @ 400mhz....so speed is almost maxxed at its current latency, once the strap resets @ 400mhz, the latency loosens up on the NB, this is 'readable' w/ SiSandra 07'. This actually lowers performance for RAM throughput, although it does increase bandwidth for the rest of the mobo. Heres where things get kinda weird though, if you are at 370fsb, w/ a 9x and then lower your multi to 8x...the 'strap' resets to the 400mhz latencies, prematurely. So, in that case, a 9x multi @ 370mhz FSB is better than a 8x multi, due the speed and latency of the NB. It also means that, you can 'jump' weak areas in your OC, by forcing the NB up or down in latency, using your multi.....

Comprende'?
--------------------------------------
e6700 @ 3.75ghz, 375mhz FSB w/ 1.54vcore
40c idle/ 61c load-TAT
post #5 of 21
Yea, the lower the Multi the better (more stable).
Project Omega
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-2600K ASUS Sabertooth P67 MSI GTX 570 TwinFrozr II G.SKILL Sniper PC3-14900 
Hard DriveOptical DriveOSMonitor
OCZ Vertex 4 128GB + 15TB Lite-On Bluray Player Windows 7 ASUS VW246H (2) 
KeyboardPowerCaseMouse
Logitech G15 Corsair 750TX Antec P280 Logitech G5 
Mouse PadAudio
SteelSeries Experience I-2 X-Fi Fatal1ty Professional 
  hide details  
Reply
Project Omega
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-2600K ASUS Sabertooth P67 MSI GTX 570 TwinFrozr II G.SKILL Sniper PC3-14900 
Hard DriveOptical DriveOSMonitor
OCZ Vertex 4 128GB + 15TB Lite-On Bluray Player Windows 7 ASUS VW246H (2) 
KeyboardPowerCaseMouse
Logitech G15 Corsair 750TX Antec P280 Logitech G5 
Mouse PadAudio
SteelSeries Experience I-2 X-Fi Fatal1ty Professional 
  hide details  
Reply
post #6 of 21
Same seems true for my AMD rigs...low multi High FSB--but 7 seems to work the best for some unknown...
Shop Dog
(13 items)
 
 
CPUMotherboardGraphicsRAM
E8400 Asus Blitz Formula SE HD3870X2 G Skill 2 x 2GB DDR2 800 
Hard DriveOptical DriveOSMonitor
Velociraptor 150GB LG DVD Burner Vista Ultimate 64 AOC 21.5" LED 1080p 
KeyboardPowerCaseMouse
Deck Legend Silverstone 750 Modular OverClock Edition Lian Li V1100 Logitech Trackball 
Mouse Pad
Nope 
  hide details  
Reply
Shop Dog
(13 items)
 
 
CPUMotherboardGraphicsRAM
E8400 Asus Blitz Formula SE HD3870X2 G Skill 2 x 2GB DDR2 800 
Hard DriveOptical DriveOSMonitor
Velociraptor 150GB LG DVD Burner Vista Ultimate 64 AOC 21.5" LED 1080p 
KeyboardPowerCaseMouse
Deck Legend Silverstone 750 Modular OverClock Edition Lian Li V1100 Logitech Trackball 
Mouse Pad
Nope 
  hide details  
Reply
post #7 of 21
i would only do #3 if your capable of reaching a 514 fsb and you have ddr2-1000mhz ram.

i found that 3.6ghz on x8 multi with pc2-6400 ram running at pc2-7100 (ddr2-900mhz) is HELLA fast. i booted into windows about 2 times faster than running 3.6ghz on a x9 and ddr2-800mhz.

so number 2 is the way to go.
Poopsicle
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600k @ 4.5GHz Gigabyte Z68X-UD4-B3 EVGA GTX460 SC EE 1GB 8GB G.Skill @ 1333MHz (7-7-7-21) 
Hard DriveOptical DriveOSMonitor
Corsair Force 3 120GB + 3TB Lite-On DL DVD+/-RW w/ Lightscribe Windows 7 Pro x64 Samsung B2230 @ 1080P 
KeyboardPowerCaseMouse
Logitech MK710 Corsair HX 850W NZXT Tempest Evo Logitech Performance MX 
  hide details  
Reply
Poopsicle
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600k @ 4.5GHz Gigabyte Z68X-UD4-B3 EVGA GTX460 SC EE 1GB 8GB G.Skill @ 1333MHz (7-7-7-21) 
Hard DriveOptical DriveOSMonitor
Corsair Force 3 120GB + 3TB Lite-On DL DVD+/-RW w/ Lightscribe Windows 7 Pro x64 Samsung B2230 @ 1080P 
KeyboardPowerCaseMouse
Logitech MK710 Corsair HX 850W NZXT Tempest Evo Logitech Performance MX 
  hide details  
Reply
post #8 of 21
Is there a way to get the 9x multiplier on a e6400 in a p5b? mine only offers 6-7-8...
My system
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 e6400@3.8ghz Asus p5k xfx 8800GTS 2gb Supertalent 4-4-3-8 
Hard DriveOSMonitorPower
2 160gig seagate striped xp pro corp samsung 1000p Antec p450 
CaseMouse
Old antec, don't know model HP optical 
  hide details  
Reply
My system
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 e6400@3.8ghz Asus p5k xfx 8800GTS 2gb Supertalent 4-4-3-8 
Hard DriveOSMonitorPower
2 160gig seagate striped xp pro corp samsung 1000p Antec p450 
CaseMouse
Old antec, don't know model HP optical 
  hide details  
Reply
post #9 of 21
the e6400 is based on a 8x multi. no way to get any higher. sorry.
Poopsicle
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600k @ 4.5GHz Gigabyte Z68X-UD4-B3 EVGA GTX460 SC EE 1GB 8GB G.Skill @ 1333MHz (7-7-7-21) 
Hard DriveOptical DriveOSMonitor
Corsair Force 3 120GB + 3TB Lite-On DL DVD+/-RW w/ Lightscribe Windows 7 Pro x64 Samsung B2230 @ 1080P 
KeyboardPowerCaseMouse
Logitech MK710 Corsair HX 850W NZXT Tempest Evo Logitech Performance MX 
  hide details  
Reply
Poopsicle
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600k @ 4.5GHz Gigabyte Z68X-UD4-B3 EVGA GTX460 SC EE 1GB 8GB G.Skill @ 1333MHz (7-7-7-21) 
Hard DriveOptical DriveOSMonitor
Corsair Force 3 120GB + 3TB Lite-On DL DVD+/-RW w/ Lightscribe Windows 7 Pro x64 Samsung B2230 @ 1080P 
KeyboardPowerCaseMouse
Logitech MK710 Corsair HX 850W NZXT Tempest Evo Logitech Performance MX 
  hide details  
Reply
post #10 of 21
Thread Starter 
i have DDR 800 G.skill HZ series with D9s, think i can get 500 sumthin sumthin fsb on em? thats like 920ish speeds on DDR800..
MENTLEGEN
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel 3770k @ 4.2 Asrock z77 extreme4 Gigabyte G1 GTX 1080 Samsung Wonder Ram pc12800 4gx4 (16g) 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO N/A Corsair h100i Windows 10 
MonitorKeyboardPowerCase
Crossfire 27QHD IPS @ 96hz Ducky Shine 3 ~ Soon to be Whitefox Seasonic 750W Gold CM Stryker 
MouseMouse PadAudio
Zowie EC1-A iCEMAT Audio Technica ATH-A900x 
  hide details  
Reply
MENTLEGEN
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel 3770k @ 4.2 Asrock z77 extreme4 Gigabyte G1 GTX 1080 Samsung Wonder Ram pc12800 4gx4 (16g) 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO N/A Corsair h100i Windows 10 
MonitorKeyboardPowerCase
Crossfire 27QHD IPS @ 96hz Ducky Shine 3 ~ Soon to be Whitefox Seasonic 750W Gold CM Stryker 
MouseMouse PadAudio
Zowie EC1-A iCEMAT Audio Technica ATH-A900x 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › Higher FSB vs high multi