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New to Lynnfield architecture, need assistance Troubleshooting.

post #1 of 7
Thread Starter 
Ok Gents,

So I've picked up an old Lynnfield mobo, some memory, hd 7850 2gb and a xeon x3460 for my kids first box.

All parts are 2nd hand. I bought the motherboard with an i3-550 Westmere with the factory cooler. I then sent off for an ebay special Lynnfield x3460.

So I updated the motherboard bios to the latest and all drivers. Shut down the machine.

Popped in the Lynnfield x3460 put a rice grain on the cpu spreader mounted the factory cooler booted up the machine.

Initial impressions, WOW this is almost like my 2500k, really strong.

I then start benching it and notice TEMPS are higher than i'd like 48°C-52°C, this is 2 more cores than the Westmere i3-550 so ok hotter.

So i then pull up hw monitor, hmm this thing thinks it should be running at 3.6ghz at almost idle. Seems as if its trying to turbo to max or close to it.

I then run IBT, click, computer totally shuts down prior to even attempting to load up the cpu.

Rig stats are as follows:

Motherboard: Asrock p55-pro
CPU: Xeon x3460 lga1156
Memory: Corsair xms 1866 ddr3-1.5v
PSU: Corsair cx750m

This machine is set to defaults so, I would assume the temp ramps up but it hadn't even had the chance TJmax is set for 72.7°C which wasn't nearly hit.

If any one has a clue what i should be looking at on this one..
post #2 of 7
Are you sure the grain of rice isn't preventing the cooler from making full contact to the CPU lid? By either the rice grain or warping the CPU latch's frame.
post #3 of 7
drum.gif
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finally quiet
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Kingston 60GB 3ware/LSI 9750-4i Hitachi 5k3000 2TB x4 RAID 5 Intel for now 
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post #4 of 7
Thread Starter 
Quote:
Originally Posted by SelecaoNYC View Post

Are you sure the grain of rice isn't preventing the cooler from making full contact to the CPU lid? By either the rice grain or warping the CPU latch's frame.


The rice grain i speak of is called thermal compound. Guessing its your first go-round.



FYI the thermal compound spread well looked like a quarter when i removed the stock heatsink.
post #5 of 7
Well, Lynnfields do run a mite warm, but not that much. What is the cooler you're using?

I also have a X3460, mounted with a Thermalright Ultima 90 (92mm tower cooler) and it gets to the 60's when OCed to 3.1 GHz (204*15, cooler is too small to try higher multis). On stock speeds it hovers on the 50's while on load and undervolted it barely gets to the high 40's.

Lastly, is your RAM forcing any XMP mode? On my EVGA, activating XMP modes does a slight OC to everything. If it really tries to get to 3.6 GHz, then yes you might want to check CPU-Z (it is supposed to boost up to around 3.4 GHz with 1-core load)

And yes, Lynnfields are still awesome. Sandys are like only 10% better, so any performance improvement is pretty small. The only thing your 2500k shines is at OCing. Lynnfields barely get to 4-4.2 GHz, most 2500k's worth their salt go to 4.8-5 GHz (hell, i had a 5 GHz 2600k)
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post #6 of 7
Thread Starter 
@Starbomba,

Wow finally some non-troll actually answers my thread.

Thank you for the informed insight. I believe I am running xmp on the 1866. I'll clock it down and see how it runs de-clocked.

What would you suggest for clock speed on the memory, what is the max you've run on your x3460?
post #7 of 7
Well, the max i've ran on the X3460 has been 1025 MHz (2050 MT/s) . However, that was with 1 GB sticks, and they are Registered DDR3 sticks, not plain vanilla RAM. With regular RAM (my WonderRAM 4 GB sticks) i was able to get 872 MHz (1744 MT/s). I believe i could get 900 MHz with a bit more of cooling though, with the full 16 GB RAM.

Getting 1600 MT/s is "easy" at least on my motherboard, since it does have the 1600 divider, and thus you do not have to overclock anything else (a couple extra volts on the IMC do not hurt though) but still, 1333 MHz is more than enough for most things. The 2500k has the same RAM speeds. But getting 1600 MHz gives you a really decent boost, so check on the BIOS if you have the divider (AsRock site says it should have it) instead of just going the XMP route.

Also, if you can go in a more sensible route, do not diss that 550. Mine rocked the house in many games, especially on SLI, and ran cooler than my Xeon biggrin.gif
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X79 The Hydra
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i865G Chronos
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CPUMotherboardGraphicsRAM
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Hard DriveOptical DriveCoolingOS
Samsung MMBRE64GHDXP-MVBD1 Samsung SH-222 Thermalright Ultima-90 Windows 98 SE 
OSMonitorKeyboardPower
Windows XP Professional 32 bit Dell SP2309W Genius SlimStar 8000 Generic 500w PSU 
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