Question overclocking memory to 3200mhz

[superfrillz12]

Hi all,
this is my machine
PCPartPicker part list / Price breakdown by merchant

Type|Item|Price
:----|:----|:----
CPU | Intel - Core i7-8700K 3.7 GHz 6-Core Processor | Purchased For £339.95
CPU Cooler | CRYORIG - H7 49 CFM CPU Cooler | Purchased For £34.98
Motherboard | Asus - ROG STRIX Z370-E GAMING ATX LGA1151 Motherboard | Purchased For £226.97
Memory | Corsair - Vengeance RGB Pro 16 GB (2 x 8 GB) DDR4-3600 Memory | Purchased For £221.33
Video Card | Sapphire - Radeon RX VEGA 64 8 GB NITRO+ Video Card | Purchased For £439.72
Case | NZXT - H700i ATX Mid Tower Case | Purchased For £179.99
Power Supply | SeaSonic - FOCUS Plus Gold 650 W 80+ Gold Certified Fully-Modular ATX Power Supply | Purchased For £94.99
| Prices include shipping, taxes, rebates, and discounts |
| Total | £1537.93
| Generated by PCPartPicker 2019-04-06 18:10 BST+0100 |


I am currently using 3600mhz xmp default profile, however with this i get high memory speeds of 3600mhz. which i don't need. i also did some reading about vccio, is there a way i can manually oc my ram to 3200mhz and reduce the core temps? currently (75c) package temps on prime 95 small ftt

 

[Calvin7]

Case cooling:
Fan Options
Front: 3 x 120mm or 2 x 140mm fan (3 x 120mm fan included)

Top: 3 x 120mm or 2 x 140mm fan

Rear: 1 x 120mm or 1 x 140mm fan (1 x 140mm fan included)

You can add more fans to top. You can also replace the fans and use ones that move more air.

You can manually set memory parameters in BIOS:

16GB Kit (2 x 8GB) 3600MHz
Tested Latency: 18-19-19-39
Tested voltage: 1.35v

You can manually set:
AI Overclock Tuner set to [Manual]
Page 3-14 of manual

Page 3-15 of manual
Set DRAM Frequency to [DDR4-3200MHz]

Scroll down to DRAM Voltage and Enter in 1.35v

Go to Dram Timing Control and at the very top enter in the primary timings for your kit 18-19-19-39 for 3600MHz. At a lower speed of 3200MHz you can run tighter timings (lower number) - perhaps 17-18-18-37

Where CAS Latency is the first number to set followed by the next three options to change. The four number are the only ones to change starting with CAS Latency. Save & Exit BIOS.