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X58 SLI (132-BL-E758)

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Here are some common issues I have had with the EVGA X58 SLI (132-BL-E758). I have used this board for about 5 years daily. This is not necessarily a repair guide. I hope other people will find this information useful. -DudeBeFishing

Common issues[edit | edit source]

Problem Solution

1.) No POST with a Xeon CPU.

- If you lose the resistor, you can bridge R539 temporarily to see if the system POSTs with the Xeon. I do not know if this will cause long term issues. Mine has worked for 5 years with R539 bridged.

2.) No POST with RDIMMs, Registered RAM.

  • A Xeon W3680, W3690, or X5600 series is required to use registered RAM modules. RAM modules must be 1Rx8 or 2Rx8. 1Rx4 and 2Rx4 do not work.
  • If the motherboard and RAM were previously working together, and all the RAM modules do not work when moved to another motherboard, try the following:
- Check the register brand. For Samsung OEM RAM, the two common registers are Inphi and IDT. The Inphi registers sometimes get stuck in a locked state, usually when overclocked beyond JEDEC specs. This will sound crazy. Place the RAM in a freezer for at least 12 hours. This should reset the register. I have not had this issue with IDT registers.
- Inphi: https://i.imgur.com/rPAUNf7.jpg
- IDT: https://i.imgur.com/XOTC30E.jpg

3.) No POST with RAM set to 1600Mhz or higher, while using a Xeon X5600 series.

  • The Xeon X5600 series does not support RAM multipliers over x5 (1333Mhz). You need to increase BCLK to use faster RAM speeds. Max BCLK is about 216. You will need to tweak other voltages to go above 160 BCLK. This will vary between motherboards and CPUs. If you are not comfortable changing these settings, I recommend getting a Xeon W3680/W3690. They have unlocked RAM multipliers.
- In the BIOS, set the RAM speed to 1333Mhz.
- Set the timings manually to match the 1600Mhz memory profile.
- Set the BCLK to 160.
- Lower the QPI Link speed to be near default speed (3200Mhz)
- Lower the CPU multiplier to match the default speed (X5650 - 2.6GHz, X5660 - 2.8GHz, etc)
- Set the uncore below 3000Mhz

4.) RAM channels missing, or Windows not seeing all installed RAM. Most common with Samsung OEM Non-ECC unbuffered modules.

  • Increase the Round Trip Latency (RTL) by 2 or 3 in the BIOS.

5.) Unusually low FPS in video games and low CPU utilization. Temps, clockspeed, etc all look normal.

  • Disable HPET in the BIOS. It is enabled by default. It causes issues on this motherboard.
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