[記憶體] 想知sever 可否ecc ram 同recc ram 一齊用的?

本帖最後由 SIFAI 於 2015-4-2 11:45 編輯

同主題一樣, 想知可否同時用4g ecc  ram. 同 4 g. Recc ram 共同使用到認到有8 g. Ram ?



另外想問一下如果普通ram 配 普通ecc ram 行又有冇問題的呢?
在server  or 個人電腦

謝謝!

提示: 作者被禁止或刪除 內容自動屏蔽

TOP

本帖最後由 alexanderman 於 2015-4-2 13:20 編輯

(deleted)

TOP

回覆 1# SIFAI

Registered DIMM跟ECC Unbuffered RAM不可以混插,只能選其中一種

TOP

提示: 作者被禁止或刪除 內容自動屏蔽

TOP

應該可以, 不過全部 RAM 都只會行 non ecc mode

TOP

回覆 4# alexanderman

WOW~
你同#6 師兄的意見相反呢~~~
唔知誰勝誰負呢~~

TOP

應該話
Registered ECC 比 Non-ECC 貴
純ECC 就比 Registered ECC  貴  

平   Non-ECC-> Registered  ...
yarehk 發表於 2015-4-2 13:35


下 原來RECC 係平過 純ECC?
我睇到有D 又話RECC 係有多粒CHIPS的? 話有特別用
但原來ECC 重貴D............真的不知呢~~

TOP

僅供參考

http://forum.crucial.com/t5/Cruc ... n-I-Mix/ta-p/150486

When adding new memory, you should match what is already in your system. Adding non-ECC memory to an ECC system will disable the error-checking and correcting ability of your memory modules. While your system may still operate, the enhanced features of the ECC modules will no longer be active in your computer.

You can determine if your system has ECC by simply counting the number of black memory chips on each module. ECC (and parity) memory modules have a chip count divisible by three or five. This extra chip detects if the data was correctly read or written by the memory module. If the data wasn't properly written, the extra chip will correct it in many cases (depending on the type of error). Non-ECC (also called non-parity) modules do not have this error-detecting feature. Any chip count not divisible by three or five indicates a non-parity memory module.

Using ECC decreases your computer's performance by about 2 percent. Current technology DRAM is very stable, and memory errors are rare, so unless you have a need for ECC, you are better served with non-parity (non-ECC) memory.

TOP

本帖最後由 alexanderman 於 2015-4-2 15:13 編輯
回覆  alexanderman

WOW~
你同#6 師兄的意見相反呢~~~
唔知誰勝誰負呢~~
SIFAI 發表於 2015/4/2 14:15


Apple這樣回答 (https://support.apple.com/zh-hk/HT202892):
Mac Pro 支援無緩衝 UDIMM 與暫存 RDIMM,請勿混用這兩種記憶體。混用 UDIMM 與 RDIMM 會在電腦開機時,導致發出記憶體錯誤音效。

Dell的Forum的回答也差不多 (http://en.community.dell.com/sup ... p/f/3514/t/19542378):
You can use either/or, but you cannot MIX UDIMMs and RDIMMs.  It will not harm your PC to mix them - your PC is smart enough not to allow it and it will stop with an error.

還有Intel 某staff的回答 (https://communities.intel.com/message/268640):
If you're using a Xeon 3400 series processor, you can use either RDIMM (registered) or UDIMM (unbuffered), but you can't mix RDIMM and UDIMM.

有興趣的可以嘗試混插呢兩種RAM,但後果自負。

至於第二點,普通ram 配 普通ecc ram 又得唔得呢? 呢個或者可以 (例如HP N54L),但要參考所用底板的spec

TOP