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ASUS P5B Deluxe Failing +7MHz OCs



I've been using an old ASUS P5B deluxe motherboard as a test bench for a while now. I knew it could overclock, so I threw in a Core 2 Quad Q8200 and loaded the latest BIOS to try it out. I've figured out how to do it, but with any overclock at all (the ratio is 7, so every increase in 1 number from 100 to 650 is 7MHz) will cause it to fail to POST. I even bumped the Voltage to 1.3 (from 1.25) and it still won't boot with the overclock. I have managed to underclock the processor, but that's not what I'm trying to do. Any suggestions? Thanks.

 CPU: I9-7900X RAM: 64GB (16X4) DDR4-2933 GPU: PNY RTX 2060 MOBO: ASUS X299 Deluxe PSU: Corsair RM850 SSD: ADATA XPG SX8200 PRO 1TB HDD: Seagate Barracuda 2TB Case: Corsair iCUE 465X Cooler: Corsair 280 AIO

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Drop the memory multiplier first

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: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally 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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