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alexstar2015
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8 Posts
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10062
June 27th, 2022 10:00
dell optiplex 7000MT DDR5 Ram campatibility
Dear Support :
I found Optiplex 7000MT Have a Ram Campatibility that cause the system cannot Poweron , when I insert Crucial DDR5-4800 16GB (Micro Chip) , the system can't PowerOn , How can I fix it while using this ram ?
4365
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Posted June 27th, 2022 11:00
Thank you! We have received the required details. We will work towards a resolution. In the meantime, you may also receive assistance or suggestions from the community members.
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0
Posted June 27th, 2022 13:00
the Crucial DDR5-4800 16GB is too fast for the Dell 7000.
The following table lists the memory specifications of your OptiPlex 7000 Tower.
Table 1. Memory specifications Memory slots Four-DIMM slots
Memory type DDR5
Memory speed - 3600 MHz
- 4000 MHz
- 4400 MHz
Maximum memory configuration 128 GB
Minimum memory configuration 8 GB
Memory size per slot 8 GB, 16 GB, and 32 GB
Memory configurations supported - 8 GB, 1 x 8 GB, DDR5, 4400 MHz, single-channel
- 16 GB, 1 x 16 GB, DDR5, 4400 MHz, single-channel
- 16 GB, 2 x 8 GB, DDR5, 4000 MHz, dual-channel
- 32 GB, 1 x 32 GB, DDR5, 4400 MHz, single-channel
- 32 GB, 2 x 16 GB, DDR5, 4000 MHz, dual-channel
- 32 GB, 4 x 8 GB, DDR5, 4000 MHz, dual-channel
- 64 GB, 2 x 32 GB, DDR5, 3600 MHz, dual-channel
- 64 GB, 4 x 16 GB, DDR5, 4000 MHz, dual-channel
- 128 GB, 4 x 32 GB, DDR5, 3600 MHz, dual-channel
4349
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Posted June 27th, 2022 17:00
So will you mind help us to report to dell "bios team" have this issue and hope they can fix it at the future bios version ?
4352
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Posted June 27th, 2022 17:00
I think is not the main problem that cause cannot power on the computer , I also test KLEVV DDR5 4800 for Optiplex 7000MT and It work fine on the computer , So is that any other solution I can fix it and use the ram??
4350
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Posted June 27th, 2022 17:00
Dell bios is picky about aftermarket ram not validated by Dell. it can work with some non-Dell ram but not others. the only potential possible solution is when future bios version comes out, but no guarantee.
4341
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Posted June 27th, 2022 18:00
A Dell will typically clock down the RAM if it's faster than specs.
If RAM is being mixed - mfrs., speed, capacities, and especially volts, that can cause issue. At least if speed is different, and the RAM works, a Dell run it at the slowest speed of the slowest chip.
In your case with the Crucial RAM not working, and since it isn't completely within specs anyway, best bet is to return it since it's guaranteed to work. Find some RAM that is within specs.
I checked the Crucial site. This isn't the first time the RAM they recommend isn't within exact specs. A few years ago, when I emailed them about some wrong RAM on their website with proof from a Dell Tech Guide, they never changed it.
4340
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Posted June 27th, 2022 18:00
A safe bet? 4800MHz RAM as sold by Dell for 7000 MT: https://www.dell.com/en-us/shop/pfydresults/274763?categoryId=2999&sid=51
@redxps630 is right about the slightly slower speeds for the MT. Yet, the micro has 4800MHz specified.
4337
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Posted June 27th, 2022 19:00
Re: will you mind help us to report to dell "bios team" have this issue and hope they can fix it at the future bios version?
this and other discussion in community hopefully might reach Dell engineering eventually if enough users complain, but the only known person with some inside connection is the community manager.
Optiplex 7000 has about 40 users benchmark. these are validated ddr5 desktop model
HMCG78MEBUA081N 2x16GB 5x 135% Dell Hynix ddr5 HMCG78MEBUA081N 4x16GB 2x 127% Dell Hynix ddr5 HMCG66MEBUA084N 2x8GB 2x 130% hynix ddr5 7000 MT memory: DDR5
Memory type DDR5
Memory speed - 3600 MHz
- 4000 MHz
- 4400 MHz
7000 SFF memory: DDR4
Memory type Dual-channel, DDR4
Memory speed 3200 MHz
7000 Micro memory: sodimm DDR4/DDR5
Memory type DDR4/DDR5
Memory speed - DDR4—3200 MHz
- DDR5—4800 MHz
4111
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Posted June 28th, 2022 10:00
Dell Social Media team has pm me . hope they can help us to report to dell that can resolve my problem
lamberticus
1 Message
6124
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Posted June 29th, 2022 08:00
I had a tech call with Crucial and they were able to confirm the compatibility issues with the Crucial DDR5 modules and the Optiplex 7000. They are working with Dell on a resolution, but no ETA they could give me. Just ordered some Kingston instead and we'll see if that works.