Memory problems....

[EarthRock]

I just bought 2 8gig chips for my computer i have 16 gigs alrdy installed via 4x4 gig chips. When i went and installed the 8 gig chips in place of 2 of the 4 gig chips the computer did not boot. the lights on the mouse and keyboard did not light up screen stayed black. I tried to install just one 8 gig chip and to no luck still black screen tried in all 4 slots. so i put in one 4 gig chip and the damn thing booted so i installed the remaining 4 gig chips that i alrdy had before. my question is why can i not use the new 8 gig chips. they are the same brand and speed just more per chip . 

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System Information

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Time of this report: 4/8/2021, 16:32:58

Machine name: DESKTOP-TSI7VF7

Machine Id: {0F4A0984-08D1-4A1B-B208-51D2433BE026}

Operating System: Windows 10 Pro 64-bit (10.0, Build 19042) (19041.vb_release.191206-1406)

Language: English (Regional Setting: English)

System Manufacturer: Micro-Star International Co., Ltd.

System Model: MS-7B85

BIOS: BIOS Date: 08/06/18 14:12:56 Ver: V1.10 (type: BIOS)

Processor: AMD Ryzen 7 2700X Eight-Core Processor (16 CPUs), ~3.7GHz

Memory: 16384MB RAM

Available OS Memory: 16334MB RAM

Page File: 5693MB used, 13072MB available

Windows Dir: C:\WINDOWS

DirectX Version: DirectX 12

DX Setup Parameters: Not found

User DPI Setting: 96 DPI (100 percent)

System DPI Setting: 96 DPI (100 percent)

DWM DPI Scaling: Disabled

Miracast: Available, no HDCP

Microsoft Graphics Hybrid: Not Supported

DirectX Database Version: 1.0.8

DxDiag Version: 10.00.19041.0546 64bit Unicode

[Skiiwee29]

<-- moved to CPUs, Motherboards, and Memory -->

[Helpful Tech Witch]

Sometimes you might have to clear the CMOS when changing memory configs.

I'd suggest you try that.

[EarthRock]

I like to consider myself a bit on the better end of knowing pcs but it seems i give my self to much credit. Do i just restart and load bios and look for a clear button or something of that nature?

[m4ttyaches]

What are the specs of the ram? maybe they are not supported by your motherboard. if you go on crucial system scanner it will tell you which ram is the best for your pc and the max capacity that your motherboard can have

[EarthRock]

i have 4x4 gig viper DDR4 3000Mhz chips and i bought 2 8 gigs of the same speed and type and brand its all the same just the chips are bigger in gbs

 

[Helpful Tech Witch]

1 minute ago, EarthRock said:

Do i just restart and load bios and look for a clear button or something of that nature?

There should be a battery I your motherboard.

Turn off the powersupply using the switch, then remove that battery and put the new sticking back in 20 minutes later. It has to be at least 20 minutes, PC's can hold enough charge to keep the CMOS powered for a bit.

[EarthRock]

Can i use the 2 8 gig chips and 2 of the 4 gig chips?

[m4ttyaches]

4 minutes ago, EarthRock said:

Can i use the 2 8 gig chips and 2 of the 4 gig chips?

you can clear the CMOS even without the ram plugged in, it's important that you turn off the PSU switch and remove the cable

[EarthRock]

Okay so turn off the PSU with Switch unplug the PSU remove the battery wait 20 mins install the 2 8 gig chips and 2 4 gig chips and then turn it on. then wait 20 mins. Got it thank you very much 

[m4ttyaches]

1 minute ago, EarthRock said:

Okay so turn off the PSU with Switch unplug the PSU remove the battery wait 20 mins install the 2 8 gig chips and 2 4 gig chips and then turn it on. Got it thank you very much 

Yes. Remember to put the battery back in facing the right way.
If I remember correctly your motherboard has the 2 sticks ram placement as:
cpu -- empty -- ram -- empty -- ram, it's important to install them this way so you get the maximum out of your perfromance

[EarthRock]

[EarthRock]

starting from the left to right what slots would 8 gigs go in and what slots would the 4 go in?

[m4ttyaches]

Idk the latencies of the two sets of ram, so even though they are from the same brand and with the same Mhz, I would be careful with mixing them. Having two different chips with different timings will force the faster chip to run in slower mode, so it wouldn't really change a thing cause your 2x8gb paired with 2x4gb could potentially just run as the same config that you had before.
I would try putting the 2x8gb set in this position: cpu ----- empty slot ---- ram ---- empty slot ----- ram
after that (and if the latencies match) you can consider maxing out the slots

[EarthRock]

both of them have a CAS latencies of 16 i dont know if that is what you needed to know or not.

[EarthRock]

the timing is not the same tho.....

4 gig are 

• DDR4 3000 (PC4 24000)
• Timing 16-18-18-36
• CAS Latency 16
• Voltage 1.35V 
  8 gigs are 
• DDR4 3000 (PC4 24000)
• Timing 16-16-16-36
• CAS Latency 16
• Voltage 1.35V

[EarthRock]

since the timing are the same and it would be really no point to mix them together. would it be better to just use the 2 8 gig and store the 4 gig chips away?

[m4ttyaches]

It shouldn't be a problem, you'll just have to deal with the fact that the faster ram will run at the lower timing and that it wouldn't be a dual channel setup anymore, which would result in "slower" performance. You also have a ryzen 7 2700x, which can take up to 128gb of ram (theoretically), but they would have to be at a max 2900-3000 Mhz speed. Keep in mind that higher gb ram doesn't mean faster performance, if your CPU can't keep up with it. Maxing out all the slots with this kind of setup (i.e 4gb - 8 gb - 4gb - 8gb) would result in a 16/18 gb? ram, but it would be slower than just 2x8gb of ram in dual channel. You can try it if you want, but I wouldn't go furthest than 2x8gb set in dual channel or maybe a 2x16gb 3000Mhz in dual channel with a Ryzen 7 2700X.

You can obv try if you want and test the speed, building PCs is fun because you can experiment as much as you want
It's not impossible to have all the slots maxed out and make them run at a higher speed, but that would mean overclocking your cpu and amping up the voltage A LOT, which could result in permament damage on your mobo, if you've never done it before. It's really not worth it and in most cases 16gb are more than enough.

Let me know how it goes, let's hope after the cmos is cleared out you can have it run with the 16gb of ram

[EarthRock]

With that i will just install the 2 8 gig chips i dont want to overclock anything. going to remove the PSU cord and switch it off now and see what happens. Hopefully it just works and i dont mess anything up further lol thanks for all the input has made this mad easy. 

[m4ttyaches]

Just now, EarthRock said:

With that i will just install the 2 8 gig chips i dont want to overclock anything. going to remove the PSU cord and switch it off now and see what happens. Hopefully it just works and i dont mess anything up further lol thanks for all the input has made this mad easy. 

No big deal! Fingers crossed

[EarthRock]

Okay installed everything worked great have a question tho.... in my bio it says it's only running at 2133 but the sticks are 3000 would you know what happened there?

 

[EarthRock]

[-rascal-]

59 minutes ago, EarthRock said:

the timing is not the same tho.....

4 gig are 

• DDR4 3000 (PC4 24000)
• Timing 16-18-18-36
• CAS Latency 16
• Voltage 1.35V 
  8 gigs are 
• DDR4 3000 (PC4 24000)
• Timing 16-16-16-36
• CAS Latency 16
• Voltage 1.35V

 

But the timings are NOT the same

 

• DDR4 3000 (PC4 24000)
• Timing 16-18-18-36

• DDR4 3000 (PC4 24000)
• Timing 16-16-16-36

 

If you are trying to use both 8GB x2 + 4GB x2, make sure, when you load XMP, it is using the 16-18-18-36 timings. The slower of the two.

 

As for WHERE the sticks should be installed, alternating slots

[--- CPU SOCKET ---] [-- Slot 1 --] [--Slot 2 --] [--Slot 3 --] [--Slot 4 --]

[--- CPU SOCKET ---] [-- 8GB --] [-- 4GB --] [-- 8GB --] [-- 4GB --]

[EarthRock]

Well nvm it days 2933 now so awesome lol thanks for everything seems to be working fine I think

[-rascal-]

4 minutes ago, EarthRock said:

Okay installed everything worked great have a question tho.... in my bio it says it's only running at 2133 but the sticks are 3000 would you know what happened there?

 

 

OC menu, and find X.M.P. Profile.

Enabled it, and you should have a new drop-down menu come up.

Select...something like Profile #1 (or #2) DDR4-3000 16-18-18-18-36 1.35V