X58 overclocking club

[agent_x007]

Different memory but 48GB works for me, but you can forget about XMP (you need to manually set all the things) :

 

[lexluthermiester]

Thank you all friends, for the valuable answers.
I asked/emailed Patriot Ram support and they said "Patriot PV316G186 C0K Black Mamba 16 GB 1866MHz, CL10, 2 x 8 GB DDR3 RAM KIT" is incompatible with X58 chipset.

Of course they're going to say that, they haven't tested/qualified them. However, the following...

Different memory but 48GB works for me, but you can forget about XMP (you need to manually set all the things) :
View attachment 333452

...is evidence that 8GB DIMMs work perfectly.

48GB / 6 DIMM slots = 8GB DIMMs

@Dn_z
Buy your 8GB DIMMs, make sure your motherboard BIOS is up to date, install, enjoy!

 

[RyzenMaster.sys]

The QVL for your motherboard is likely only going to list support for ram that was available to validate when that board was released.

It's unlikely that the compatible list will contain any new ram sold today, over a decade later. I suspect that's where patriots response is coming from.

However just because it's not on the QVL doesn't usually mean it won't work, usually just means they didn't test it.

As long as the ram has a return policy it's never going to hurt to buy and try it.

 

[DudeBeFishing]

I don't think I've ran QVL listed memory on any motherboard. Forgot that list exists.

 

[RyzenMaster.sys]

I only reference the QVL if I'm having issues with getting memory to work in a particularly picky platform and just want to know something that will work.

 

[DudeBeFishing]

It is a great quad core for an OEM workstation, but I don't think it's worth getting over the X5680 with an overclocking capable motherboard. They're roughly the same price. Only a 267MHz difference. That can easily be made up with a slight BCLK overclock. If you're running 1600Mhz or faster RAM, you'll need to increase BCLK anyway.

 

[lexluthermiester]

I don't think I've ran QVL listed memory on any motherboard. Forgot that list exists.

I don't either. To me those lists come off as favoritism and I deliberately ignore them.

I only reference the QVL if I'm having issues with getting memory to work in a particularly picky platform and just want to know something that will work.

Or this.

 

[agent_x007]

However, the following...

...is evidence that 8GB DIMMs work perfectly.

48GB / 6 DIMM slots = 8GB DIMMs

CPU-z Valid (with memory used) :

 

[lexluthermiester]

CPU-z Valid (with memory used) :

Nice OC! Have you played around with a W3680 or W3690? Unlocked, 32nm and 6 cores...

 

[agent_x007]

I own i7 980X, but haven't used it for a while though. Tried to pushed clocks more but no stability test (this is on Intel "extreme" BOX cooler) :

Intel Core i7 Extreme 975 @ 4533.49 MHz - CPU-Z VALIDATOR

[vdev1v] Validated Dump by agent_x007 (2023-10-03 20:43:08) - MB: Asus Rampage III Extreme - RAM: 49152 MB

valid.x86.fr

 

[Keullo-e]

Is it just me or does Win10 22H2 have problems installing to a X58 system? Just hangs on the Windows logo, even when I put everything to stock clocks

Well, I try with the longer way around, I'll install Win7 and update it to Win10..
EDIT: Problem solved. The SSD was the culprit, secure erasing it helped. Installing to Sandy as I thought that it was the X58's fault lol

Of course they're going to say that, they haven't tested/qualified them. However, the following...

...is evidence that 8GB DIMMs work perfectly.

48GB / 6 DIMM slots = 8GB DIMMs

@Dn_z
Buy your 8GB DIMMs, make sure your motherboard BIOS is up to date, install, enjoy!

Interesting. I thought that Core i7 CPUs have a 24GB limit, but perhaps 8GB DIMMs just didn't exist back then and Intel said that 24GB is the limit just because that was the practical limit?

 

[lexluthermiester]

but perhaps 8GB DIMMs just didn't exist back then

This...

Intel said that 24GB is the limit just because that was the practical limit?

...and sort of this.

By the raw specs, all 1366 CPUs have a memory controller that can electronically address 288GB per CPU. See the following;

Intel® Xeon® Processor X5690 (12M Cache, 3.46 GHz, 6.40 GT/s Intel® QPI) Product Specifications

Intel® Xeon® Processor X5690 (12M Cache, 3.46 GHz, 6.40 GT/s Intel® QPI) quick reference guide including specifications, features, pricing, compatibility, design documentation, ordering codes, spec codes and more.

ark.intel.com

However, because of the way Intel did the memory interface between CPU and chipset/motherboard, the motherboard had to have the correct configuration and chipset for RAM sizes that high. For example in Dell & HP systems that were based on the 5500 chipset the RAM limit was 48GB per CPU regardless of what the CPU was fully capable of until a BIOS update later allowed for 96GB per CPU. With the models that had the 5520 chipset the hard limit was supposed to be 96GB per chip but that was later increased 192GB per CPU with a later BIOS update. Those limit changes were never officially announced.

 

[Keullo-e]

This...

...and sort of this.

By the raw specs, all 1366 CPUs have a memory controller that can electronically address 288GB per CPU. See the following;

Intel® Xeon® Processor X5690 (12M Cache, 3.46 GHz, 6.40 GT/s Intel® QPI) Product Specifications

Intel® Xeon® Processor X5690 (12M Cache, 3.46 GHz, 6.40 GT/s Intel® QPI) quick reference guide including specifications, features, pricing, compatibility, design documentation, ordering codes, spec codes and more.

ark.intel.com

However, because of the way Intel did the memory interface between CPU and chipset/motherboard, the motherboard had to have the correct configuration and chipset for RAM sizes that high. For example in Dell & HP systems that were based on the 5500 chipset the RAM limit was 48GB per CPU regardless of what the CPU was fully capable of until a BIOS update later allowed for 96GB per CPU. With the models that had the 5520 chipset the hard limit was supposed to be 96GB per chip but that was later increased 192GB per CPU with a later BIOS update. Those limit changes were never officially announced.

Just wondering that what is the actual limit for X58 based motherboards 16GB DDR3 DIMMs do exist but has anyone on TPU tried with 96GB?

 

[DudeBeFishing]

16GB DIMMs most likely will work, but you will be limited in memory frequency, and timings like tRFC will be higher. Not worth it if you need high single thread performance. If you need that much RAM, it might be more cost effective to get a later generation server on the used market, or an ATX sized dual cpu server motherboard.

I'm curious if the extra QPI link, on the dual socket motherboard, helps with GPU performance. The QPI link is limited to about 12GB/s. 8GB/s is used for a x16 GPU, leaving 4GB/s for everything else, which isn't much when you consider a single NVMe drive uses 4x PCIe, or 2GB/s through the Northbridge.

 

[lexluthermiester]

Just wondering that what is the actual limit for X58 based motherboards

I have personally tested 8GB DIMMs in actual X58 systems. 16GB ECC RDIMMS work with both 5500 & 5520 chipsets. 32GB ECC RDIMMs, if you can find them, are supposed to work on 5520 and Xeon 6core CPU models, however, I've never personally tested this.

 

[Keullo-e]

Oh boy. Got a Rampage III Gene!