A990FXM-A (V1.1) - Can't set memory speed past 1333/667Mhz

Toggle sidebar Toggle sidebar
D

denisbelo

Reputable
Mar 28, 2014
2
0
4,510
That's it, I just can't set the memory speed past 1333/667Mhz, I've tried setting it to 933Mhz or 1066Mhz (O.C.), but the system will always boot with 1333/667Mhz. Do I have to set everything manually? If so, how can I do that?
 
Solution
Tradesman1
When running DRAM these days, the CPU is the Key factor , not the mobo like in days of old when the MC (memory controller) was on the mobo, and sadly the 4100 in general is basically a 1600 CPU, many can run 1866 (1 stick per channel) but have seen extremely few run 2133. With 32GB, I'd try at 1600 9-9-9-27, 1.6 and set the CPU/NB to about 1.3 and give that a try, if no joy, up the CPU/NB to 1.35....Let me know how that goes, you may however be stuck at 1333, which is what the CPU is rated for with 4 sticks (16GB), so 32GB at 1333 isn't really too bad.

Here's a chart AMD has out (though they don't mention they came up with these figures using 4GB sticks)


http://support.amd.com/en-us/kb-articles/Pages/ddr3memoryfrequencyguide.aspx
Sort by date Sort by votes
D

Deleted member 1300495

Guest
when ram comes out of the factory, it is set to a standard to where it cannot be overclocked over. I think that is what has happened with your ram
 
Upvote 0 Downvote
D

denisbelo

Reputable
Mar 28, 2014
2
0
4,510


Ok, here are the specs:

MB = ECS A990FXM-A (V1.1)
CPU = AMD FX-4100
RAM = Corsair Vengeance Pro 2133Mhz 32GB (4x8GB)

I already know that the CPU only supports 1866Mhz, but the mobo supports 2133Mhz (O.C.) and 1866Mhz without O.C.
 
Upvote 0 Downvote
Tradesman1

Tradesman1

Legenda in Aeternum
Jun 5, 2013
67,883
40
126,960
When running DRAM these days, the CPU is the Key factor , not the mobo like in days of old when the MC (memory controller) was on the mobo, and sadly the 4100 in general is basically a 1600 CPU, many can run 1866 (1 stick per channel) but have seen extremely few run 2133. With 32GB, I'd try at 1600 9-9-9-27, 1.6 and set the CPU/NB to about 1.3 and give that a try, if no joy, up the CPU/NB to 1.35....Let me know how that goes, you may however be stuck at 1333, which is what the CPU is rated for with 4 sticks (16GB), so 32GB at 1333 isn't really too bad.

Here's a chart AMD has out (though they don't mention they came up with these figures using 4GB sticks)


http://support.amd.com/en-us/kb-articles/Pages/ddr3memoryfrequencyguide.aspx
 
Upvote 0 Downvote
Solution
N

novicenicole

Reputable
Apr 29, 2014
1
0
4,510


Thank you so much for posting this as my boyfriend and I have been pulling our hair out trying to figure out why the new computer we just built wouldn't read more than 1600 when we put in 1866 RAM. We were having issues finding anything on AMD's website that would give us the specs for our processor so the link you posted was very helpful in allowing us to see that 1600 is all our processor will allow. It is still frustrating to know we could have spent less on RAM getting the 1600 instead of the 1866 since that is all the processor will take, but at least now we know what is going on.
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom