L2 Cache Error

Windows 8.1 Update Windows 8 & 8.1 Tutorial Troubleshooting L2 Cache MemoryTutorial Home>PC Hardware>Computer Basics>PC Upgrade, Troubleshooting and Repair>Troubleshooting CPUs>Troubleshooting L2 Cache Memory Step 1:Understanding CPU CacheADVANCED TUTORIAL: This is an advanced tutorial. The following steps should only be performed by an advanced user. Improper or accidental changes to the system BIOS could permanently damage your system.Cache memory holds a copy of the most recently-read RAM addresses, enabling the processor to access the same information again without fetching it from main memory. Modern processors have at least two kinds of memory cache, Level 1 (L1) and Level 2 (L2) cache. L1 cache is built into the processor die. L2 cache was originally found on the motherboard, but later became part of slot-based processor assemblies and is now part of the CPU itself. L2 cache is 128KB to 512KB in size, much larger than L1 cache. Step 2:Significance of L2 Cache Errors When the processor needs information, it checks L1 cache, then L2 cache. It goes to main memory only if neither cache holds the desired information. Because L2 cache holds a large number of RAM addresses, an L2 cache failure is serious. It corrupts data, meaning that the CPU can no longer access memory reliably unless L2 cache is disabled. Disabling L2 cache causes a huge slowdown in performance. Because L2 cache is built into the CPU, an L2 cache error that's confirmed means that you need to replace your CPU. Step 3:Detecting L2 Cache ErrorsHere are some of the ways that an L2 cache error can be reported. Systems with the AMI BIOS use 11 short beeps to report an L2 cache error detected at boot time. Windows XP displays a 0x2E DATA_BUS_ERROR (blue screen) error if L2 cache, main memory, video memory or other problems take place. 0x50 PAGE_FAULT_IN_NONPAGED_AREA can also indicate defective L2 or main memory or other types of hardware or software problems. 0x218 UNKNOWN_HARD_AREA can be triggered by defective L2 cache as well as hard disk problems. Step 4:Enabling ECC for L2 Cache Open the Advanced BIOS setup or similar screen which contains settings for Internal (processor) or L2 cache. If ECC checking for L2 cache (see figure) is disabled, enable it. ECC checking can eliminate L2 cache errors. Save your changes and restart your system. Perform the same types of tasks you were performing before. If you still have errors like those in Step 3, proceed to step 5. Step 5:Checking L2 Cache SettingsTo determine if L2 cache is faulty, you can disable it. However, keep in mind that the computer will be much

Gaming Smartphones Tablets Windows 8 PSUs Android Your question Get the answer Tom's Hardware>Forum>Overclocking>Cpu L1 cache error> Solved Cpu L1 cache error Tags: Motherboards Overclocking CPUs psu Last response: 14 March 2014 10:28 in Overclocking Share zombiedigger 10 March 2014 10:02:38 Hello community, Im new here and this is my first post! I have a little trouble with my cpu and I didnt quite find what im looking for so thats why Im asking. I am constantly having my computer freeze over during rough gaming, the problem occurs only when https://panam.gateway.com/s/tutorials/Tu_949704.shtml playing Crysis3, (have done once or twice with bf4 but not anymore for a long time.) with crysis3 its more like a rule to freeze every now and then. Im running FX-8350 with undervolt to 1.2v from 1.4v and the turbo (4.2ghz) taken off. Did this mainly because of high temps what I got (reduced temps by 20celcius for me.) Corsair 600w http://www.tomshardware.com/answers/id-2058467/cpu-cache-error.html psu modular. R9 270X toxic Asrock 970 pro3 8gb ram dump file tells me that its hardware issue (0x124) and more precisely L1 cache error. While im writing this it starts to seem obvious that the undervolting could be the cause and reseting to factory defaults will be my next thing to try, but lets assume it wont help. the motherboard supports tdp up to 130w and the cpu is 125w, my northbridge is pretty hot to the touch all the time. Cooling of the computer should be ok since I have coldair intake and hot air exhaust fans, cpu's heatsink is not stock, temperatures are around 50c with cpu and gpu durning heavy load. also freezes while side plate of the case is taken off. All the parts are new, less than month old. And again, only does this durning crysis3. (once or twice with bf4 but not for a long time now) When freezes the screen goes red and have to manually restart. (power button works for it). Thank you in advance! -Sam More about : cpu cache error Someone Somewhe

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detects, handles, reports, and corrects cache memory errors. Memory errors have Fault Status Register (FSR) values to distinguish them from other abort causes.This section describes:Error build optionsAddress decoder faultsHandling cache parity errorsHandling cache ECC errorsErrors on instruction cache readErrors on data cache readErrors on data cache writeErrors on evictionsErrors on cache maintenance operations.Error build optionsThe caches can detect and correct errors depending on the build options used in the implementation. The build options for the instruction cache can be different to the data cache.If the parity build option is enabled, the cache is protected by parity bits. For both the instruction and data cache, the data RAMs include one parity bit per byte of data. The tag RAM contains one parity bit to cover the tag and valid bit.If the ECC build option is enabled:The instruction cache is protected by a 64-bit ECC scheme. The data RAMs include eight bits of ECC code for every 64 bits of data. The tag RAMs include seven bits of ECC code to cover the tag and valid bit.The data cache is protected by a 32-bit ECC scheme. The data RAMs include seven bits of ECC code for every 32 bits of data. The tag RAMs include seven bits of ECC code to cover the tag and valid bit. The dirty RAM includes four bits of ECC to cover the dirty bit and the two outer attributes bits.Address decoder faultsThe error detection schemes described in this section provide protection against errors that occur in the data stored in the cache RAMs. Each RAM normally includes a decoder which enables access to that data and, if an error occurs in this logic, it is not normally detected by these error detection schemes. The processor includes features that enable it to detect some address decoder faults. If you are implementing the processor and require these features, contact ARM to discuss the features and your requirements.Handling cache parity errorsTable 8.2 shows the behavior of the processor on a cache parity error, depending on bits [5:3] of the Auxiliary Control Register, see Auxiliary Control Registers. Table 8.2. Cache parity error behaviorValueBehaviorb000Abort on all parity errors, force write through, enable hardware recoveryb001b010b011Reservedb100