Overclock.net › Forums › Intel › Intel CPUs › Xeon 771 on 775 motherboard overclockability
New Posts  All Forums:Forum Nav:

Xeon 771 on 775 motherboard overclockability

post #1 of 3
Thread Starter 
Hello. Recently I dusted off my old motherboard and scrapped together a pc that I want to use as a HTPC (4 GB DDR2 RAM, Radeon HD 6850). I have a Gigabyte P45 UD3LR motherboard but only a E6300 processor (1.86 GHz dual core) for it. And today I noticed the 771->775 mod, also I was happy to see others got it working on this motherboard.

I have a few questions though before I decide to buy a Xeon quad core processor.

With my E6300 I managed a 3.43 GHz stable overclock with a 490 FSB (7x multiplier) for a few years. I really want to run smooth video project for playing video files, this is very CPU intensive.

I want to know what is the overclocking potential of Xeon processors on LGA775 motherboards?

My theoretical max speeds at 490 FSB:
(Multiplier, Speed)
7, 3.43 GHz
7.5, 3.67 GHz
8, 3.92 GHz
8.5, 4.16 GHz
9, 4.41 GHz
10, 4.9 GHz

Now the only good priced Xeons that ships to my country on Ebay that I could find is:

80 W TDP:

$36: E5420 2.5 GHz, 7.5x multiplier
$49: E5430 2.67 GHz, 8x multiplier
$48: E5440 2.83 GHz, 8.5x multiplier - This one is more expensive
$40: E5462 2.8 GHz, 7x multiplier - FSB is high at 1600 and only 7x multiplier so theoretically not much to overclock (3.43 GHz)

Others:

$59: X5450 (TDP 120 W) 3 GHz, 9x multiplier - Multiplier is 9x so good overclocking potential BUT will it run too hot when overclocking on stock box cooler??

$48: L5420 (TDP 50 W) 2.5 GHz, 7.5x multiplier - Nice and low TDP??

I realize overclocking is CPU dependent but I am happy to know my old motherboard can handle a very high fsb. I just have no experience and cannot find much info how overclockable these processors are.

Would it be worth getting one of these CPU's and do the mod or will it still be too slow for SVP on 1080p? Any other ideas?

Thanks for your thoughts regarding this smile.gif
post #2 of 3
An HTPC must be Silent.
This is the most important.
Noone wants a noisy PC while watching a movie or listening to music.

As for SVP I don`t know why you want to mess with it. But even if you do then cpu will not be a problem if you go quad core.

As for 1080p it can be done with a E5200, as I have one and I know it can be done. Even with a lower model, as long as you have a graphics card with hardware decoding, as the card you do have (which is overkill, better use a HD6450 with passive cooling as UVD is the same).

My HTPC was running a E8400 cause I got it cheap, but it was undervolted and underclocked to 2.66Ghz so to be Silent.
Now it runs a E5450 cause I had it, else it would run a L series as my 24/7 system has.
As I said cpu is not that critical so even a L5410 would do. And this way you make sure the HTPC will be Silent.

Your mobo is good so expect 440FSB at least.
But most probably you`ll run stock speed even with the L5410.

So... I would pick a passive cooled HD6450 (or even a HD4350 I run is good for the job), L54xx, a Silent heatsink like a Zalman 10x Optima or other cheaper model is OK, and a silent PSU.
Good PSU have a 12cm (or bigger) PWM fan which adjust fan speed per temperature. So the less the system consumes the less the PSU heats up and so its fan operates at lower speed making it Silent.
Edited by patentman - 3/15/14 at 3:31pm
Video Editing
(14 items)
 
HTPC
(14 items)
 
Internet PC
(11 items)
 
CPUMotherboardGraphicsRAM
Xeon E5450 @4Ghz P5Q Deluxe EAH3450 silent  8GB A-DATA Vitesta Extreme Edition DDR2-800+ C... 
Hard DriveHard DriveHard DriveHard Drive
2x WD WD10EALX RAID1 WD10EZEX out of site backup 2x WD320AAKS RAID0 (sometimes in Matrix Raid) 2x or 3x WD800JD RAID0 
Optical DriveCoolingOSPower
LITEON DVD-RW Zalman CNPS10X Optima Silent mode win7 64 Chieftec CFT-560A-12C 
CaseOther
Chieftec LBX-03 Full tower w/active HDD cooling NEC uPD720201 USB3.0 
CPUMotherboardGraphicsRAM
Intel Xeon E5450 Asus P5QL-E EAH4350 silent 8GB DDR2 800 
Hard DriveOptical DriveCoolingOS
120GB IDE DVDrom CNPS7500-AlCu LED silent mode win7 64 
MonitorPowerCaseMouse
TV 40" SeaSonic SS-350-ET 80+ Asus Vento TA-8G1 mini bluetooth mouse 
AudioOther
ASUS Xonar D1 USB mpeg4 DVB-T tuner 
CPUMotherboardGraphicsRAM
Intel Xeon L5420 @0.952V ASUS P5QL-E ASUS EAH3450 Silent 8GB DDR2 800 
Hard DriveOptical DriveCoolingPower
WD3200AAJB DVD-RW Zalman CNPS7000 Al-Cu Silent mode SeaSonic SS-350-ET 80+ 
CaseAudioOther
1998 SoundBlaster Live! (`1998) NEC uPD720201 USB3.0 
  hide details  
Reply
Video Editing
(14 items)
 
HTPC
(14 items)
 
Internet PC
(11 items)
 
CPUMotherboardGraphicsRAM
Xeon E5450 @4Ghz P5Q Deluxe EAH3450 silent  8GB A-DATA Vitesta Extreme Edition DDR2-800+ C... 
Hard DriveHard DriveHard DriveHard Drive
2x WD WD10EALX RAID1 WD10EZEX out of site backup 2x WD320AAKS RAID0 (sometimes in Matrix Raid) 2x or 3x WD800JD RAID0 
Optical DriveCoolingOSPower
LITEON DVD-RW Zalman CNPS10X Optima Silent mode win7 64 Chieftec CFT-560A-12C 
CaseOther
Chieftec LBX-03 Full tower w/active HDD cooling NEC uPD720201 USB3.0 
CPUMotherboardGraphicsRAM
Intel Xeon E5450 Asus P5QL-E EAH4350 silent 8GB DDR2 800 
Hard DriveOptical DriveCoolingOS
120GB IDE DVDrom CNPS7500-AlCu LED silent mode win7 64 
MonitorPowerCaseMouse
TV 40" SeaSonic SS-350-ET 80+ Asus Vento TA-8G1 mini bluetooth mouse 
AudioOther
ASUS Xonar D1 USB mpeg4 DVB-T tuner 
CPUMotherboardGraphicsRAM
Intel Xeon L5420 @0.952V ASUS P5QL-E ASUS EAH3450 Silent 8GB DDR2 800 
Hard DriveOptical DriveCoolingPower
WD3200AAJB DVD-RW Zalman CNPS7000 Al-Cu Silent mode SeaSonic SS-350-ET 80+ 
CaseAudioOther
1998 SoundBlaster Live! (`1998) NEC uPD720201 USB3.0 
  hide details  
Reply
post #3 of 3
Thread Starter 
I realize I went a bit crazy with the overclocking part, I just thought it would be necessary since what I have noticed is that you need a fast CPU for SVP. Not sure what your problem is with SVP? redface.gif

Also I looked at the E5200 and I'm pretty sure it won't be able to do 1080p SVP. They recommend a i7 on the website (although I run a 2500k fine).

You do make a good point about the noise levels, although it is quite quiet at the moment; I will mod the fans if need be. thumb.gif

edit: realize now you were talking about 1080p without SVP on the E5200
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › Xeon 771 on 775 motherboard overclockability