CPU L2 Cache ECC Checking ???

[TobiasAlt]

Hi,

mich würde mal interssieren was "CPU L2 Cache ECC Checking" bringd !!!

Soll man es aktivieren oder deaktivieren?

Und wie schauts mit der Perfomanae aus?

[Scoradmin]

Hi,
kostet ein bißchen Performance (nur bei Benchmarks), einen Nachteil wenn es deaktiviert ist konnte ich noch nicht feststellen. Bei Servern mit ECC-Ram würde ich es aktiviert lassen.

[troublemaker]

CPU L2 Cache ECC Checking

Common Options : Enabled, Disabled

Details

This feature enables or disables the L2 (Level 2 or Secondary) cache's ECC (Error Checking and Correction) function, if available. Enabling this feature is recommended because it will detect and correct single-bit errors in data stored in the L2 cache. As most data reads will be satisfied by the L2 cache, the L2 cache's ECC function should catch and correct almost all single-bit errors in the memory subsystem.

It will also detect double-bit errors but not correct them. But this isn't such a big deal since double-bit errors are extremely rare. For all practical purposes, the ECC check should be able to catch virtually all data errors. This is especially useful at overclocked speeds when errors are most likely to creep in.

There are those who advocate disabling ECC checking because it reduces performance. True, ECC checking doesn't come free. You can expect some performance degradation with ECC checking enabled. However, unlike ECC checking of DRAM modules, the performance degradation associated with L2 cache ECC checking is comparatively small.

Balance that against the increased stability and reliability achieved via L2 cache ECC checking and the minimal reduction in performance seems rather cheap, doesn't it? Of course, if you don't do any serious work with your system and want a little speed boost for your games, disable CPU L2 Cache ECC Checking by all means.

But if you are overclocking your processor, ECC checking may enable you to overclock higher than was originally possible. This is because any single-bit errors that occur as a result of overclocking will be corrected by the L2 cache's ECC function. So, for most intents and purposes, I recommend that you enable this feature for greater system stability and reliability.

Note that the presence of this feature in the BIOS doesn't necessarily mean that your processor's L2 cache actually supports ECC checking. Many processors don't ship with ECC-capable L2 cache. In such cases, you can still enable this feature in the BIOS but it will have no effect.



Quelle: The Definitive BIOS Optimization Guide (http://www.rojakpot.com/)

[TobiasAlt]

Also dann deaktvieren oder wie?

[astronautix]

So weit ich weiß unterstützen nicht alle CPU ECC checking. Also von daher kannst Du es ruhig auslassen. Nachteile hast Du dadurch nicht.

[TobiasAlt]

Das wäre dann ein XP2200 auf nem Abit KX7-333R

[schwarzer_Kater]

Hi,

wie oben schon geschrieben, der Check der ECC Prüfsumme im L2-Cache kostet etwas Performance (ca. 2-5%), allerdings kann man das getrost ausgeschaltet lassen, es sei denn, man "will auf Nummer sicher gehen..."
Ich hab jedenfalls keine Systemfreezes feststellen können, hab den ECC-Check disabled.
Abgesehen davon sollten Single-Bit Fehler im L2-Cache der CPU ohnehin nur extrem selten auftreten, denn wenn ein Rechner nur vernünftig läuft, wenn diese Option aktiviert ist, dann hat es die CPU eh schon irgendwie hinter sich ... ;D

Grüße,

schwarzer Kater

[TobiasAlt]

Danke @ all !!!

;D

[TobiasAlt]

Gibts sonst noch ein paar Einsellungen für nen Performance Schub?

Was soll ich noch alles aktivieren bzw deaktivieren ???