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i7-5775C average IMC ceiling?

Joined
Jun 8, 2022
Messages
381 (0.45/day)
Location
Ohio, USA
System Name Trackstar
Processor AMD Ryzen 7 5800X3D -30 All Core CO (on Corsair XC5 block)
Motherboard Gigabyte B550 AORUS Elite V2 Rev 1.0 (F17 BIOS)
Cooling Corsair XD5 pump / Corsair XR5 1x 360mm (front) + 1x 420mm (top) rads
Memory 32GB G.Skill DDR4-3600 CL14 1:1 (F4-3600C14Q-32GVKA kit)
Video Card(s) ASRock RX 6950XT OC Formula (on Bykski A-AR6900XTOCF-X block)
Storage WD_BLACK SN850X 2TB w/HS (FW ver. 620361WD)
Display(s) Dell S3222DGM 32" 1440p/165Hz FreeSync
Case Fractal Design Meshify S2
Audio Device(s) Realtek ALC1200 Integrated Audio
Power Supply Super Flower Leadex Platinum SE 1200W on Liebert GXT4-1500RT120 UPS
Mouse Corsair Nightsword RGB
Keyboard Corsair K60 RGB PRO
VR HMD N/A
Software Windows 11 Pro 23H2 (Build 22631.3958)
Benchmark Scores https://www.3dmark.com/sw/1131940 https://www.3dmark.com/fs/29315810
Recently bought an i7-5775C for an overclocking side project. Found some cheap DDR3-2400 memory to try and get the most out of the platform however I'm having trouble getting the system to POST after loading the 2400 XMP profile. Realized I failed to consider that the non-"E" Broadwell IMC might not be up to the task for such a high frequency. Even raising the SA voltage to 1.18 and analog/digital voltage offset to +.150 it still fails to post at 2400. Only when I loosen the timings and set the multiplier to 21.33 (DDR3-2133) am I able to get it to POST.

Might be a long shot here but does anybody have experience with memory overclocking on Broadwell-DT and if so where do you find the IMC tops out at?
 
Joined
Jan 4, 2022
Messages
91 (0.09/day)
I've just installed a similar i7-3770K in an old PC. I might try a few XMP tweaks tomorrow if I have time.
 
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