Question Why one of the RAM reports speed differently, even if they are all the same, look the same and puchased in pairs?

Page 2 - Seeking answers? Join the Tom's Hardware community: where nearly two million members share solutions and discuss the latest tech.
Toggle sidebar Toggle sidebar
A

Altair44

Distinguished
Jul 10, 2014
71
0
18,630
So I have purchased 2 sets of RAMs long ago. I didnt notice this before. Just replaced the older motherboard with a ASUS TUF B560 Gaming Plus WIFI one. When I booted up I see one of the RAMs is showing speeds differently (all the RAMs are rated at 2400 by corsair. They all look same.). XMP is enabled. Task manager reports Speed as 2400 MHz. Why one RAM is reporting like this? Images below for your reference.

BIOS Image

CPU-Z Slot 1 Info

CPU-Z Slot 2 Info (What happened here??!!)

CPU-Z Slot 3 Info

CPU-Z Slot 4 Info

(Providing Links only, as I could not insert images with link for some reason. It just says "Something went wrong....")

Anyways, I just want to know why it is like this? Am I loosing performance in any way due to this? If yes, how to fix this?
 
Last edited:
Sort by date Sort by votes
Darkbreeze said:
No, it doesn't. And neither does CPU-Z. And even IF it DID, it would STILL be a problem because a DIMM that is being reported by the BIOS and by CPU-Z as 2133mhz could not, by default, run at 2400mhz without being manually overclocked. Aside from profile speeds, motherboards don't automatically make one DIMM run faster to match all others. Also, note how one DIMM, if you look at the screenshots linked in the OP, shows as being Micron ICs while the others all show SK Hynix. That shouldn't be possible for DIMMs that were purchased together in the same blister pack and is an underlying reason, probably, of why there are problems, although it doesn't specifically explain why one DIMM is running at 2133mhz, which it can't, and the others are at 2400mhz.

Again, I don't think you are actually looking at the same thread, or something.

BIOS-Menu-Info.jpg


RAM-Slot-2.png


RAM-Slot-1.png
Click to expand...
Look at what the bios shows under the info section.
32MB ram@2400.

Look at what cpuz shows for slot 2.
See that section called xmp 2400?
 
Upvote 0 Downvote
Darkbreeze said:
What it CAN do doesn't matter. At all. Ever. In ANY scenario.

What matters is what it IS doing, which is what we are trying to figure out. I might have to leave this thread soon before I say something I'll probably regret.
Click to expand...
I suppose I could say something snarky.......but I won't.

It looks like there are 2 areas saying the ram is running at 2400.
For now I'll accept that number.
 
Upvote 0 Downvote
There are NO areas saying that the DIMM which is running at 2133mhz is running at anything other than that. I wish it were true, as this thread would be resolved, but it isn't. All you are seeing is a reflection of the hard coded JEDEC specifications for that memory module being reported. There is nothing in ANY screenshot that shows that THAT DIMM is running at 2400mhz. I'm telling you there isn't and if you say there is then either prove it, and back it up, or fade, because you are not helping the OP to get to the bottom of HIS problem by giving him sketchy or just plain invalid advice. In fact, at this point it's practically a case of intentional misinformation because FOUR of us have told you explicitly that you are wrong.

Because I've already proven it. I've shown you the speed for that DIMM as reported by the BIOS and the speed for THAT DIMM as reported by CPU-Z. Nobody cares what task manager or resource monitor says, because we all (Well, most of us anyhow) know how grossly inaccurate all of the reporting utilities in Windows are anyhow and task manager especially.
 
Upvote 0 Downvote
Darkbreeze said:
There are NO areas saying that the DIMM which is running at 2133mhz is running at anything other than that. I wish it were true, as this thread would be resolved, but it isn't. All you are seeing is a reflection of the hard coded JEDEC specifications for that memory module being reported. There is nothing in ANY screenshot that shows that THAT DIMM is running at 2400mhz. I'm telling you there isn't and if you say there is then either prove it, and back it up, or fade, because you are not helping the OP to get to the bottom of HIS problem by giving him sketchy or just plain invalid advice. In fact, at this point it's practically a case of intentional misinformation because FOUR of us have told you explicitly that you are wrong.

Because I've already proven it. I've shown you the speed for that DIMM as reported by the BIOS and the speed for THAT DIMM as reported by CPU-Z. Nobody cares what task manager or resource monitor says, because we all (Well, most of us anyhow) know how grossly inaccurate all of the reporting utilities in Windows are anyhow and task manager especially.
Click to expand...
Perhaps if the op used cpuz and clicked on the memory tab it would show what speed the ram is running at.

Since you won't accept 2 sources showing 2400.
 
Upvote 0 Downvote
Bob.B said:
Perhaps if the op used cpuz and clicked on the memory tab it would show what speed the ram is running at.

Since you won't accept 2 sources showing 2400.
Click to expand...

Ok I'm going to step in here as the OP is getting NO help whatsoever with this bickering.

@Bob.B the OP's screenshots very clearly show DIMM A2 running at 2133 mhz. Since you can't seem to understand that and continue to take this thread into the weeds offering the OP no help whatsoever with his/her problem, you are no longer going to be replying to this thread. Continual behavior like this will end in permanent sanctions.
 
  • Like
Reactions: logainofhades and ex_bubblehead
Upvote 0 Downvote
Vic 40 said:
In cpu-z the spd tab shows what the ram is capable of, the memory tab will show what it really runs at, no shots of the memory tab provided.



you did this with just the one odd stick in or with all four?
Click to expand...
I just moved that stick around. Swapping it with another one from any slot. Wherever I put it, it shows 2133.
 
Upvote 0 Downvote
Altair44 said:
I just moved that stick around. Swapping it with another one from any slot. Wherever I put it, it shows 2133.
Click to expand...
Would like to see what it gives for speed with just that stick in and XMP enabled.

Would also like to see what it says for speed of the ram under the advanced section of the bios i.e. the "AI Tweaker".

Googled that ram nr btw and it gives single sticks, not sets of ram. So again did you buy single sticks or kits. Buying two single sticks together at the same day doesn't make it a kit/set.

Get the feeling that the "dram status" under the "EZ Mode" gives an SPD reading, not the actual speed which above that says 2400mhz in your pictures. In that case it makes sense since three sticks have the same JEDEC tables where the speed in all is 1200, just timings differ. Then there the one that seems to be an anomaly where it gives different speeds/timings per each table which likely means that this one defaults to 2133mhz if jedec timings are used i.e. when XMP/DOCP/A-XMP not is enabled yet.

I can btw only guess that you have XMP enabled ..... but i assume you did.

Edit,

See now in your first post you say you did enable XMP.
 
Last edited:
Upvote 0 Downvote
Right, those are JEDEC SPD readings that I've been trying to explain to him about and wouldn't listen. Not actual "running at" speeds. There are systems with very fast memory installed that show baseline SPDs of anywhere from 2133 to 3200mhz specs in CPU-Z and other utilities, it sure doesn't mean they are running at that speed.

And to revisit and clarify further, I think you are right and that these are four individual DIMMs, not two kits. Because there are three DIMMs that report SK Hynix ICs and one that reports Micron, and the one that reports Micron is NOT the stick that is running at 2133mhz, it's a different one. So there are some rather wide disparities between all of these sticks and from what I can see it only looks like TWO of them are actually the exact same, BUT, they ALL show as having the same part number, which makes THIS thread exactly like and absolutely concrete proof of, what I outlined from the screenshots of the B-die finder page that listed three different configurations for one model number of G.Skill memory that I posted above and previously in another thread.

I would at this point, HIGHLY recommend selling all this memory and buying ONE kit of two DIMMs that equals the amount of memory the OP wants to run, or if two of those DIMMs actually DID come together in one set, then MAYBE you can try keeping that and getting another identical kit to go with it, but then you are still trying to mix DIMMs that didn't come together and might end up with a different kind of problem anyhow. At the very least the one stick needs to be replaced but there are no guarantees that replacing it is going to result in everybody playing nice together.

Sometimes when you get too many kids in the pool, somebody is going to poop.
 
Upvote 0 Downvote
Darkbreeze said:
Because there are three DIMMs that report SK Hynix ICs and one that reports Micron
Click to expand...
From what i get looking at those photo's is that there are two Micron (slots 2+4) and two Hynix (slots 1+3) where one of the Micron is the one that is different.

If all are working at 2400mhz is he as far as i'm concerned fine. Think with 2400mhz as max in these sticks he has little to worry about. In the end it's just something odd in the bios that makes him want to find out what is "wrong", he doesn't claim stability issues.
 
Upvote 0 Downvote
Vic 40 said:
No, i'm sure they sold him single sticks as a set if he didn't buy them knowingly as single sticks. The Micron that is odd between these four is also the only one that is dualrank besides the different speeds and timing options.
Click to expand...
You are right. While purchasing, I selected quantity 2 i.e. 2 single sticks in different packs. There were no single pack available with 2 sticks in them (Out of Stock). I just assumed they would be the same, since I had done it before and it was fine.

SK Hynix sticks (2x8GiG) are the one I purchased first, while assembling the PC. Then after some months, I purchased the Micron RAMs, as there were at a pretty good discount.
 
Last edited:
Upvote 0 Downvote
Darkbreeze said:
Right, those are JEDEC SPD readings that I've been trying to explain to him about and wouldn't listen. Not actual "running at" speeds.
Click to expand...
By "him", do you mean me? Assuming you replied to "Vic40". I really appreciate your comments on the thread, I learned a lot from them and I am the OP. Sorry if I replied to you in any unwanted manner.
 
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