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Hello everyone. So, my friend has got an old PC, and he wants to OC the cpu to it's limits on air before he sells it. his specs are the following
cpu: Intel Core2Quad Q8400 2.66 GHz
memory: 8GB RAM DDR2 (4x2)
mobo: ASUS P5K E/S Wi-Fi
gpu: MSI R7 250 2GB OCV1
psu: no-name 500W&230V
cooler: deepcool gammaxx 300

additonal : Adata ssd su650 240gb & seagate baracuda 1tb hdd

I overclocked that CPU from 2.66 to 3.2 on it's standard voltages, and when i wanted to go higher, like to 3.3GHz, his pc didn't boot anymore. It was restarting each time the BIOS was loading and scanning the components inside his pc.
I want to know, is it possible to get this CPU any higher than 3.2 GHz ? it doesn't matter if it can be oc'ed by adjusting the voltages or not, he only wants that 3.4 to make some tests.. i couldn't afford to do it myself, because since it's a quite old pc, it can get messed up quickly, and i don't want to pay my friend for breaking his pc. i want to say that the pc impressed me somehow.. i could not ever believe that BF1 would ever be possible to play on such a old pc... anyways, is there anyway to do this?

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You've hit the limit of FSB. You're limited by the chipset's capability, not CPU.

 

Maybe this board can increase the multiplier instead?

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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14 minutes ago, Jurrunio said:

You've hit the limit of FSB. You're limited by the chipset's capability, not CPU.

 

Maybe this board can increase the multiplier instead?

the mobo fsb is 333 and the cpu's actually fsb is 400, multiplier is set to auto and is shows 8 which is the maximum

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3 minutes ago, Bannedlmao said:

the mobo fsb is 333 and the cpu's actually fsb is 400, multiplier is set to auto and is shows 8 which is the maximum

Yea, P35 chipset tops at about 400MHz FSB

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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