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How to overclock my C2D E7500?

By coolvaibh2012 · 4 replies
Feb 10, 2012
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  1. Hello friend, first of all thanks for replying to my previous posts. Your suggestions and guidance helped me a lot.

    Now as i had purchased C2D E7500, i want to overclock it. I am a total beginner in this field. I searched a lot on net and forums, got various ideas, used clockgen but i am not able to OC my cpu. Then, at last, i tried from my BIOS. I edited Bus Speed there. Initially it was 266 and multiplier is 11. So i incremented Bus Speed with 5. My system OCd very well upto the Bus Speed of 299 but on 300 it got unstable after logging into my user account. It so happened that PC logged in successfully but after 5 mins. a blue screen came and said "Dumping to Trash...." or something like that.
    At that time i remembered that somewhere on the net i had read that we also have to increase Vcore voltage and have to OC the RAM. So, i got helpless because i didn't saw any editable field in BIOS for the same.
    So, i request you people to please guide me in this field. Please give me step by step instructions if possible. And also tell me what softwares shall i use for it and how to use them. The detailed specs of my PC are as listed below. Also i am posting CPUZ screenshots (without OC) so that you could get better idea of my hardware. Thanx.

    Mainboard- MSI G41M-P26

    CPU- Intel C2D E7500, 2.93 GHz, 3 MB cache, FSB 1066

    RAM- 4 GB DDR3, Dual channel
  2. slh28

    slh28 TechSpot Paladin Posts: 1,706   +172

    First of all do you actually need to overclock the CPU? What are you using the computer for?

    Before playing with the voltages you need an aftermarket CPU cooler and download a temperature monitoring software (realtemp, open hwmonitor, etc.) to make sure you don't fry your chip.
  3. coolvaibh2012

    coolvaibh2012 TS Rookie Topic Starter

    Here are CPUZ readings of my system-----


    Name- Intel Core 2Duo E7500
    Codename- Wolfdale Max TDP-65W
    Package- Socket 775 LGA
    Technology- 45 nm Core Voltage- 1.264 V
    Specification- Intel (R)Core(TM)2 Duo CPU E7500 @ 2.93GHz
    Family- 6 Model- 7 Stepping- A
    Ext. Family- 6 Ext. Model- 17 Revision- RO
    Instructions- MMX, SSE 91,2,3,3s,4.1), EM64T, VT-x

    Clocks (Core #0) Cache
    Core Speed- 2933.0 MHZ L1 Data- 2x32 Kbytes 8-way
    Multiplier- x 11.0 L1 Inst.- 2x32 Kbytes 8-way
    Bus Speed- 266.7 MHz Level 2- 3072 Kbytes 12-way
    Rated FSB- 1066.5 MHz

    Selection-------{Preocessor # 1} (Faded Out) Cores- 2 Threads- 2

    Type- DDR3 Channel #- Dual
    Size- 4096 Mbytes DC Mode- Symmetric

    DRAM Frequency- 533.3MHz
    FSBRAM- 1:2
    CAS# Latency (CL)- 7.0 clocks
    RAS# to CAS# Delay (tRCD)- 7 clocks
    RAS# Precharge (tRP)- 7 clocks
    Cycle Time (tRAS)- 20 clocks
    Row Refresh Cycle time(tRFC)- 86 clocks
    Command Rate (CR)- 2T

    Please tell me if these readings are sufficient or shall i post SPD readings too. Also please tell me how and where can i increase or decrease Vcore voltage and CPU multiplier.
  4. Buckshot420

    Buckshot420 TS Enthusiast Posts: 301

    In the BIOS but every board manufacturer has different names for the same settings so I can't help you with the exact "how". It is pretty easy to find a basic guide though. Why did you buy a processor and board that isn't meant to be overclocked if you plan on OC'ing? Instead of an already outdated dual core LGA775 CPU you probably should have asked around about a better alternative CPU with a LGA1155 Socket.
    Looks like this guy has the exact same problem as you :)
  5. DjKraid

    DjKraid TS Guru Posts: 545   +21

    Also if you overklock by only changing the BUS speed then you have to decrease the memory speed too. You can for ex use CPU-Z to establish a baseline for all the voltages and speeds and remember to look under "Memory" for "DRAM Frequency" when you run everything on default and then you can increase the BUS speed a bit and see what happens with the dram frequency. So the best and easiest way to OC is by changing the multiplier (but that that's not possible on all CPUs) and then "fine tune" with the BUS speed.
    Your CPUs "max default voltage" is 1.3625v and when you start to change that you should only take tiny steps at the time and you should never change voltages unless you have and aftermarket cooler, the stock cooler can only handle small OCs!

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