Replacing bad memory question

[OneHungLo]

Can I replace this bad slot with a 32gb stick or does it have to be 8bg?

[Colmike9]

Yes, but also swap the 8gb stick with the new 32gb one, slots 3 and 4.

https://support.apple.com/en-us/HT210103

[Jesus H Christ 2.0]

ginkgo biloba works even better.

[2MuchMark]

Not sure but if you call Apple they could tell you over the phone.

[OneHungLo]

Thanks, guys.

Upgraded and all fixed!

[InfoGuy]

Originally Posted by OneHungLo

Can I replace this bad slot with a 32gb stick or does it have to be 8bg?

Originally Posted by OneHungLo

Thanks, guys.

Upgraded and all fixed!

First, it appears that 2933 MHz DDR4 R-DIMM is recommended for your Mac. Initially, when you had 112 GB, your Mac identified 4 sticks of 2933 MHz DDR4 R-DIMM, but with 240 GB, it's recognizing 0 sticks of 2933 MHz DDR4 R-DIMM.

Second, it's a 6-channel configuration. Just balancing equal amounts of total memory for slots 1-6 and 7-12 may lead to memory problems. Optimally, you want to match your RAM with the respective slots to reduce the possibility of errors, but even that is no guarantee. Match as best you can, the RAM's capacity, speed, timings, voltage and manufacturer.

The link from Colmike9 indicates the 32GB sticks should be in the odd slots.

When done, you may want to run a RAM test.

[2MuchMark]

112 to 240GB of Ram? Wow. What applications do you use to take advantage of that much memory and do you see a difference?

[OneHungLo]

Originally Posted by InfoGuy

First, it appears that 2933 MHz DDR4 R-DIMM is recommended for your Mac. Initially, when you had 112 GB, your Mac identified 4 sticks of 2933 MHz DDR4 R-DIMM, but with 240 GB, it's recognizing 0 sticks of 2933 MHz DDR4 R-DIMM.

Second, it's a 6-channel configuration. Just balancing equal amounts of total memory for slots 1-6 and 7-12 may lead to memory problems. Optimally, you want to match your RAM with the respective slots to reduce the possibility of errors, but even that is no guarantee. Match as best you can, the RAM's capacity, speed, timings, voltage and manufacturer.

The link from Colmike9 indicates the 32GB sticks should be in the odd slots.

When done, you may want to run a RAM test.

Thanks for the feedback.

As soon as I added ram and rebooted my issues were resolved. So it must recognize and utilize it, but you're 100% right.

Install the 32GB DIMMs in the first slot of each channel pair.

^ That's probably what is throwing it off.

I'm going to swap them around to the proper slots.

[OneHungLo]

Originally Posted by 2MuchMark

112 to 240GB of Ram? Wow. What applications do you use to take advantage of that much memory and do you see a difference?

Mainly the adobe suite ( Premiere/After Effects/ Media encoder) editing large 4k video files while using Chrome with a bazillion tabs open.

If I had more than 20-30 tabs open while editing a video it would slow down.

Now I can open 500 tabs while editing video with zero slow down so it made a night and day difference.

I suspect the culprit is Chrome. I use a ton of extensions too and that thing is a massive resource hog.

[InfoGuy]

Originally Posted by OneHungLo

Thanks for the feedback.

As soon as I added ram and rebooted my issues were resolved. So it must recognize and utilize it, but you're 100% right.



^ That's probably what is throwing it off.

I'm going to swap them around to the proper slots.

You're welcome. If you're using new RAM, errors from misconfigured memory may not appear for a couple months until after burn in. Red flags include seemingly random shutdowns, software errors and corrupted data.