CVFZ and fx9590 ram compatibility at 32 gigs

[Imperial_Guards]

Hello everyone, sorry if this question is asked all the time!

Looking through the Asus manual, very few brands seem to be able to support 32 gigs of ram on this board. At least, I think that is what all these charts mean. Oddly enough, G. Skill is listed at 64 gigs at 2133mhz (but not at 32, oddly enough), even though the board only supports 32 as far as I know. Anyhoo, too the question:

What is the fastest ram I can get with this motherboard and cpu combination that is pretty well guaranteed to work and will function at full speed and capacity?

Do I need 32? No, but I want to max out this build since I will probably try to keep it going for as long as possible. At the moment, I am using 16 gigs of Crucial Ballistix Elite 1866 which is not listed in the manual. I did recently buy another 16 gigs but I was not able to use all of it (motherboard recognized all the slots at 8gigs, but only put 24-something as the total and dropped the speed down to 1333) and have since returned them.

Thanks!

[Athus]

Hello there Imperial,

Lets start with what is the recommended speeds for this CVF-Z and FX-9590.

Maximum supported memory will be 2133 for you. Now the brand from my experience, i have seen that AMD Gamer 2x8 @ 2133 (with AMP on - i use them as we speak, absolutely no complains) work, Corsair also (2x8), Gskill also and Kingston. Probably there are more brands that are supported but i am telling you what i have tested and works.

In my honest opinion, if u dont need 32 (4x8) gigs, go 16 (2x8) gigs, as i do not know if there is some instability using all 4 memory slots with very high ram speed frequency.

Hope i helped abit.

[Imperial_Guards]

Athus wrote:
Hello there Imperial,

Lets start with what is the recommended speeds for this CVF-Z and FX-9590.

Maximum supported memory will be 2133 for you. Now the brand from my experience, i have seen that AMD Gamer 2x8 @ 2133 (with AMP on - i use them as we speak, absolutely no complains) work, Corsair also (2x8), Gskill also and Kingston. Probably there are more brands that are supported but i am telling you what i have tested and works.

In my honest opinion, if u dont need 32 (4x8) gigs, go 16 (2x8) gigs, as i do not know if there is some instability using all 4 memory slots with very high ram speed frequency.

Hope i helped abit.

It does a bit. I thought I read that the FX 9590 could handle 2133, but most of the sources I run into say 1866. I also found out that the supported RAM lists in motherboard manuals are less than trustworthy. As in, they may have tested that type of RAM but there is no guarantee that they tested it at full speed.

It does surprise me that a modern processor built to handle 4 RAM slots would have many issues with it. I have 16 at the moment but might try an upgrade later. I think my issue may have been trying to use two different 16 gig kits rather than on 32 gig kit. Also, I did not see a 32 gig 1866 kit on Crucial's website for this board but they do have a 2133. I've used them for a long time and tend to trust their 100% compatible guarantee.

[blppt]

Imperial Guardsman wrote:
It does a bit. I thought I read that the FX 9590 could handle 2133, but most of the sources I run into say 1866. I also found out that the supported RAM lists in motherboard manuals are less than trustworthy. As in, they may have tested that type of RAM but there is no guarantee that they tested it at full speed.

It does surprise me that a modern processor built to handle 4 RAM slots would have many issues with it. I have 16 at the moment but might try an upgrade later. I think my issue may have been trying to use two different 16 gig kits rather than on 32 gig kit. Also, I did not see a 32 gig 1866 kit on Crucial's website for this board but they do have a 2133. I've used them for a long time and tend to trust their 100% compatible guarantee.

I dont think its the mobo, its more like the on-die memory controller having issues with all 4 banks populated with densely packed ram. In another words, you'd probably have similar problems with your particular 9590 sample in a high end ASRock or that hard-to-find-for-a-reasonable-price discontinued Gigabyte board.

[Imperial_Guards]

Installed 32 gigs of Crucial ddr3 2133 and it seems to be working just fine. All the sticks are recognized, total amount is correct, and windows recognizes it (albeit around 2 gigs has been reserved by the system...greedy windows). I have noticed that the score for memory is Passmark for both this and the 1866 is beaten by some Samsung pc3 12800. I'm guessing that it must be some super low latency (albeit slower speed) ram or something. Of course, this is a canned benchmark. I would give you raw numbers but my scores were not saved from when I last ran it.