Should I liquid cool my GPU or CPU for Overclocking?

[Contempt]

I decided I'd get myself a Corsair H100i v2 for my birthday. However, I'm trying to decide whether to overclock my Ryzen 5 1600X, or my EVGA SC+ 980 Ti. Currently my Ryzen is cooled by a Cryorig H7 at 3.875 Ghz, and runs at around 60-70C. My 980 Ti, on the other hand, is not overclocked and with 100% fans usually gets 80C. So my question is this: Which would give me more performance if I installed the liquid cooler for maximum overclocking, CPU or GPU?

Full parts list:

AMD - Ryzen 5 1600X 3.875Ghz @ 1.35V
CRYORIG - H7 49.0 CFM CPU Cooler
ARCTIC - MX4 4g Thermal Paste
MSI - B350 TOMAHAWK ATX AM4 Motherboard
G.Skill - Trident Z RGB 16GB (2 x 8GB) DDR4-3000 Memory
Samsung - 850 EVO-Series 500GB 2.5" Solid State Drive
Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive
EVGA 980Ti 6GB SC+ Video Card
Corsair - SPEC-ALPHA (White/Red) ATX Mid Tower Case
EVGA - SuperNOVA G3 650W 80+ Gold Certified Fully-Modular ATX Power Supply
Microsoft - Windows 10 Home OEM 64-bit
Gigabyte - GC-WB867D-I REV 4.2 PCI-Express x1 802.11a/b/g/n/ac Wi-Fi Adapter
AOC - G2460PF 24.0" 1920x1080 144Hz Monitor

Edit: Also, will the HG10 N980 Corsair bracket keep the VRAM cool? I've never done anything like this, and am worried about it overheating or something.

 

[Darkbreeze]

No question, your GPU probably has more headroom. You are already nearly at the average maximum OC for Ryzen as it is, since most can't do better than 4Ghz anyhow. The 980TI can probably give you another 20% performance if it's done right. Possibly more with water cooling. No way you'd get another 20% of your CPU anyhow plus your CPU is capable enough as is to handle some fairly large gains beyond where your GPU card currently is.

https://www.anandtech.com/show/9306/the-nvidia-geforce-gtx-980-ti-review/17


As far as whether that cooler is compatible with your card, you'll need to look into that yourself. Shouldn't be hard to verify with a quick search.

 

[Contempt]

No question, your GPU probably has more headroom. You are already nearly at the average maximum OC for Ryzen as it is, since most can't do better than 4Ghz anyhow. The 980TI can probably give you another 20% performance if it's done right. Possibly more with water cooling. No way you'd get another 20% of your CPU anyhow plus your CPU is capable enough as is to handle some fairly large gains beyond where your GPU card currently is.

https://www.anandtech.com/show/9306/the-nvidia-geforce-gtx-980-ti-review/17


As far as whether that cooler is compatible with your card, you'll need to look into that yourself. Shouldn't be hard to verify with a quick search.

Thank you, but as a general question do most brackets keep things like the VRAM cool?

 

[Darkbreeze]

Some do, some don't, and it depends on what you get to go WITH your AIO cooler. There are special hardware adapters that allow you to do a few different things like cool VRAM and VRMs. Just depends. This explains a lot of what you'd want to know before moving forward with something like this.

http://www.overclock.net/t/1479716/guide-closed-loop-aio-coolers-on-your-gpu-warning-picture-heavy