Dell Precision 490 DUAL X5355 CPU Upgrade

Question

Hi,

I saw on this post - http://en.community.dell.com/forums/p/18734870/18857957.aspx#18857957 that the Dell Precision 490 is upgradable to the X5355. My 490 was supplied with a single 5130 and a single heatsink. I have bought another heatsink (JD210) and two matched X5355 processors (at the bottom of this post is the output of Intel CPUID with one of the processors installed). I have upgraded the BIOS to the latest version, A08

When either processor is inserted into the first CPU socket the system will boot normally. However when both sockets are occupied with the processors the system will not boot even as far as the dell BIOS screen. As far as I can tell with this motherboard there is no VRM that needs to be installed to enable the second processor. When attempting to boot the 1 and 2 lights blink green. A couple of times when I was swappping round the CPUs and reseating the RAM I got light 1, 2 and 4 blinking green.

According to the manual - http://support.euro.dell.com/support/edocs/systems/ws490/en/ug/tools.htm#wp1064477 the first combination is a possible expansion card failure (I only have one card, the graphics card, and have reseated this and in any case the PC boot s fione with only one processor). The second combination inicates a processor mismatch, but the Intel CPUID reports the processors as having identical familly, model, stepping and revision numbers.

Does any one have any suggestions??

...

Intel(R) Processor Identification Utility

Version: 3.9.20080910

Time Stamp: 2008/11/20 16:39:03

Number of processors in system: 1

Current processor: #1

Cores per processor: 4

Disabled cores per processor: 0

Processor Name: Intel(R) Xeon(R) CPU X5355 @ 2.66GHz

Type: 0

Family: 6

Model: F

Stepping: B

Revision: B4

Maximum CPUID Level: A

L1 Instruction Cache: 4 x 32 KB

L1 Data Cache: 4 x 32 KB

L2 Cache: 2 x 4 MB

Packaging: LGA771

EIST: Yes

MMX(TM): Yes

SSE: Yes

SSE2: Yes

SSE3: Yes

SSE4: No

Enhanced Halt State: Yes

Execute Disable Bit: Yes

Hyper-Threading Technology: No

Intel(R) 64 Architecture: Yes

Intel(R) Virtualization Technology: Yes

Expected Processor Frequency: 2.66 GHz

Reported Processor Frequency: 2.66 GHz

Expected System Bus Frequency: 1333 MHz

Reported System Bus Frequency: 1333 MHz

*************************************************************

geekmaster64 · Answer

Hey there,

I honestly don't know but I'll share what I know.

Its my understanding (I read online somewhere) that there are two revisions of the 490's motherboard. One that supports dual cores and one that supports quads. The kicker is that there isn't a way to tell them apart.

Its really interesting that you were able to get a quad to register. Perhaps for some reason the system controller only supports 4 threads?

Sorry I couldn't be more help but that might steer ya in the right direction.

speedstep · Answer

Matched means 'S SPEC' as well as Series and Type. SL9YM SLAC4 SLAEG   CPUIDs    6F7 (SL9YM, SLAC4) Core steppings     B3  (SLAC4) CPUIDs    6FB (SLAEG) Core steppings     G0 (SLAEG)   Bios Should be updated BEFORE trying the upgrade. What is the 'S Spec' of each CPU? You can install 'Up to two Matched Intel® Xeon® 64-bit processors ' They must be Matched pairs.  You cannot install different series. Xeon®  5100/5300 series 64-bit only end of story. BIOS SHOULD BE UPDATED BEFORE Trying Newer or Faster Processors. The upgrade candidates are essentially the same as the 2006 Mac Pro Workstation. 5160 'Woodcrest' is ok  Manufacturer Part# : MW645  Dell Part# : 311-6138   DELL 3.0 GHz Second Processor for Dell Precision WorkStation 490 ... 53XX 'CloverTown' is ok   Model Speed (GHz) L2 Cache (MB) FSB (MHz) TDP (W) E5310 1.60 2x4 1066 80 L5310 1.60 2x4 1066 50 E5320 1.83 2x4 1066 80 L5320 1.83 2x4 1066 50 E5335 2.00 2x4 1333 80 L5335 2.00 2x4 1333 50 E5345 2.33 2x4 1333 80 X5355 2.66 2x4 1333 120 X5365 3.00 2x4 1333 120 E5450 'Harpertown' is not ever going to work. The INTEL  5000x  chipset is why. The Dell Precision TM  490 is equipped with up to two Dual or Quad-Core Intel ®  Xeon ®  5100/5300 series 64-bit processors for a total of up to eight execution cores in two sockets. Dual-Core Intel ®  Xeon ®  5110 1.60GHz, 1066 FSB, 4M L2 Cache, 65 watts Dual-Core Intel ®  Xeon ®  5120 1.86GHz, 1066 FSB, 4M L2 Cache 65 watts Dual-Core Intel ®  Xeon ®  5130 2.0GHz, 1333 FSB, 4MB L2 Cache, 65 watts Dual-Core Intel ®  Xeon ®  5140 2.33GHz, 1333 FSB, 4MB L2 Cache, 65 watts Dual-Core Intel ®  Xeon ®  5150 2.66GHz, 1333 FSB, 4MB L2 Cache, 65 watts Dual-Core Intel ®  Xeon ®  5160 3.0GHz, 1333 FSB, 4MB L2 Cache, 80 watts Quad-Core Intel ®  Xeon ®  E5320 1.86GHz, 1066 FSB, 2 X 4MB L2 cache, 80 watts Quad-Core Intel ®  Xeon ®  E5345 2.33GHz, 1333 FSB, 2 X 4MB L2 cache, 80 watts Quad-Core Intel ®  Xeon ®  X5355 2.66GHz, 1333 FSB, 2 X 4MB L2 cache, 1

pjmartins · Answer

Hi,

I have the same setup, the only i got it to run was downgrading BIOS and the only one it worked on was A00 and A01 (which I have).

No idea why but of course would prefer to run on A08, as it happens all seems ok....

Wish knew full story on this one.

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Dell Precision 490 DUAL X5355 CPU Upgrade

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Model	Speed (GHz)	L2 Cache (MB)	FSB (MHz)	TDP (W)
E5310	1.60	2x4	1066	80
L5310	1.60	2x4	1066	50
E5320	1.83	2x4	1066	80
L5320	1.83	2x4	1066	50
E5335	2.00	2x4	1333	80
L5335	2.00	2x4	1333	50
E5345	2.33	2x4	1333	80
X5355	2.66	2x4	1333	120
X5365	3.00	2x4	1333	120