Memory issues only with 4 slots filled?

darkip

darkip

darkip

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Joined
22 Dec 2008
Posts
22
Location
London
Processor: Intel i7 4770k
Board: MSI Z87-GD65 GAMING
Memory: 4x 8GB Vengeance LP 1600MHz CL9 1.5V DDR3 (2x 16GB kit - CML16GX3M2A1600C9) = 32GB
GPU: ASUS R9 290x
SSD: 256GB Samsung 840 Pro

I am experiencing memtest86+ (and other memory checking tool) errors with all 4 dimms inserted. I have individually tested each memory dimm in both the PC and another separate PC, and all dimms pass (minimum 15 memtest86+ passes).

I have tried both the latest release and beta BIOSes in addition to trying XMP or manually set timings/speed/voltage.

All other settings are stock.

Any suggestions?
 
Have you tried bumping the io and sa voltages, often when populating all 4 slots theese need a boost to aid stability.
 
setter said:
Have you tried bumping the io and sa voltages, often when populating all 4 slots theese need a boost to aid stability.
Click to expand...

This. Bump VCCIO, might also need to bump DRAM voltage as well. I find i need more DRAM voltage when using 16GB than i do when using 8GB. Keep bumping voltages one at a time and eventually you'll figure out which needs increasing to fix it.
 
Its a z87 thing (have a Google!). Unusually picky when it comes to 4 dimms, I hope z97 doesn't carry the same traits.

32gb is a big load for the memory controller, even at 1600mhz. Drop CPU to stock, raise ioa/iod/sa voltages (~1.2v max!) Set dram voltage manually at 1.65v. Set xmp and then manually set the memory multiplier to x16 and manually set primary timings to 9-9-9-24-2t.

If that doesn't work, remove motherboard, drop kick it into the sun and wait for z97.
 
Unfortunately I don't seem to be having too much luck.

I bumped the voltages as so:
CpqXszl.png


And manual timings:
nqNwBmN.png


Still getting errors when memtesting. Any other ideas?
 
I had memory related crashes when I filled all slots of my ASRock z68. Turned out it was one of the sockets, try testing a known good stick in each of the memory sockets. Its easy to forget about this as most people will default to testing memory in the first socket.
 
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