I've just loaded cruch3r's app

http://calbe.dw70.de/seti.html

 I've water cooled the 5320s, they run around 36-45 degrees C, and the memory about 60-65C.  I seem to be limited by either the graphics card, the pci-e bus/the NB not running locked as i can hit 390 but not for long with BSD which reference the graphics.
I just DL 2.4V which i believe to be curnch3rs app.
The MACs are built on the same 5000x chipset so i don't think its a hardware limitation.  But I do here them talk about a V8 optimized app, i have no clue how that could or would be accomplished...

I've been running around a 4200rac on the OC q6700's (4x3.35GHz), compared to 4900rac on the 5120's (8x2.6GHz) using 2.4 off the main page.

OK let's compare two workunits, one by my 5150 and one by your E5320.  Something is not OK with your machine dropping your performance by 50%!  And we are using the same app.

Workunits are nearly identical: 0.4AR, 54.1 credit.

Your E5320:

My 5150:

Those MACs have much more similar timing per workunit to my computer than to yours.

Your workunit:  http://setiathome.berkeley.edu//result.php?resultid=614751499

My workunit: http://setiathome.berkeley.edu/result.php?resultid=620964727

Mac workunit: http://setiathome.berkeley.edu/result.php?resultid=588774781

Thanks for the help so far.  I agree my work unit time see way off and I don’t know why.

Motherboard is SuperMicro X7DA8, Memory is four 1GB Crucial FB 666MHz Dimms populated in quad channel mode.  My memory temps are around 60 to 65 degrees C.

Pictures of my system on 2CPU.com

The discussion on graphics and pci-e bus has to do with system stability while over-clocking and nothing to do with seti.

edit: I've since switched out the mobo to a SM x7da3+ and tried new ram, 4 sticks of crucial pc2-5300 (333MHz) FB-DDR2, to find it had no effect.  I did determine the X7DA8 has the correct revision chipset to run Quad Cores despite SM telling me mine doesn't (they said the serial number of my board doesn't have the correct revision NB).

That difference looks heavy. Analysing...
E5320 has only FSB 1066, while E5150 has FSB 1333. Maybe that is the limiting factor here, because the RAM's bandwidth is not   fully used (errors are an other factor).

Besides, the L5335 would use less power and has also the faster FSB1333. (But it's more expensive.)

Urs

Have you gotten your memory fixed?  If yes, did the times get back to something more reasonable?

If not, would you try dropping the overclocking rates down a bit?  I wonder if there is some major inefficiency with the memory controller due to imbalance of FSB vs DDR2 memory speeds.  Maybe it's not as much overclocking FSB rather than synchronization between FSB and RAM.

Sandra hardware mainboard info is reporting the memory is 64-bit width???  This is the new memory... 4 sticks of 2GB PC2-5300 FB-DDR2 (Crucial).



SiSoftware Sandra

Mainboard
Manufacturer : Supermicro
Multi-Processor (MP) Support : 2 Processor(s)
MPS Version : 1.40
Model : X7DA8
Version : PCB Version
Serial Number : 0123456789

System Memory Controller
Location : Mainboard
Error Correction Capability : None
Number of Memory Slots : 8
Maximum Installable Memory : 64GB
Bank1 - DIMM1A : Micron 18HF25672FD667E1D4 E30447CC DIMM Synchronous DDR2-SDRAM 2GB/72 @ 667Mt/s
Bank1 - DIMM1B : Empty
Bank2 - DIMM2A : Micron 18HF25672FD667E1D4 E30447D3 DIMM Synchronous DDR2-SDRAM 2GB/72 @ 667Mt/s
Bank2 - DIMM2B : Empty
Bank3 - DIMM3A : Micron 18HF25672FD667E1D4 D21C5C03 DIMM Synchronous DDR2-SDRAM 2GB/72 @ 667Mt/s
Bank3 - DIMM3B : Empty
Bank4 - DIMM4A : Micron 18HF25672FD667E1D4 E304481A DIMM Synchronous DDR2-SDRAM 2GB/72 @ 667Mt/s
Bank4 - DIMM4B : Empty

Chipset 1
Model : Super Micro Computer Inc 5000X Chipset Memory Controller Hub
Revision : D2
Bus : Intel AGTL+
Front Side Bus Speed : 4x 373MHz (1492MHz data rate)
Maximum FSB Speed : 4x 266MHz (1064MHz data rate)
Width : 64-bit
SMP - MP Capability : Yes
I/O Queue Depth : 12 request(s)
Maximum Bus Bandwidth : 11936MB/s (estimated)

Logical/Chipset 1 Memory Banks
Bank 0 : 2GB DDR2-SDRAM FB-DIMM 5.0-5-5-15 (tCL-tRCD-tRP-tRAS) CR4
Bank 0 Temperature : 59.0°C / 138.2°F
Bank 1 : 2GB DDR2-SDRAM FB-DIMM 5.0-5-5-15 (tCL-tRCD-tRP-tRAS) CR4
Bank 1 Temperature : 58.5°C / 137.3°F
Bank 2 : 2GB DDR2-SDRAM FB-DIMM 5.0-5-5-15 (tCL-tRCD-tRP-tRAS) CR4
Bank 2 Temperature : 58.0°C / 136.4°F
Bank 3 : 2GB DDR2-SDRAM FB-DIMM 5.0-5-5-15 (tCL-tRCD-tRP-tRAS) CR4
Bank 3 Temperature : 55.0°C / 131.0°F
Supported Memory Types : DDR2-SDRAM FB-DIMM
Channels : 4
Memory Bus Speed : 2x 373MHz (746MHz data rate)
Maximum Memory Speed : 2x 400MHz (800MHz data rate)
Multiplier : 1/1x
Width : 64-bit
Memory Controller in Processor : No
Refresh Rate : 7.80µs
Power Save Mode : No
Fixed Hole Present : No
Maximum Memory Bus Bandwidth : 23872MB/s (estimated)