Cheapest water cooler that you would recommend

[Chuck Eastlee]

I know, I know, water cooling for a G3258 may seem extreme, but I will want to upgrade to an i5/i7 cpu later on, and overclock them. It will save me time and energy to get it now, along with my baseline cpu, as well as allow me to overclock that pentium to insane levels.

[Toddwjp]

h100i,

 

singe fan rads get stuffed

[Juganog]

either a h100i for a 240mm rad  or a karaken x61 if your case supports 280mm rads

[Fulgrim]

You'd be better off with a Noctua NH-D15. It's an air cooler, so no worries about leakage. And it outperforms the H100i. Price is pretty much the same, maybe cheaper depending on where you live etc.

[Totally-A-Hero]

Kraken X41 (140mm!) outperforms the H100i. Plus the H100i has some mounting issues, ask @Faceman . He has a picture of it and seems to have a lot of knowlege on the topic (more than me anyway lol)

[Aniallation]

I know, I know, water cooling for a G3258 may seem extreme, but I will want to upgrade to an i5/i7 cpu later on, and overclock them. It will save me time and energy to get it now, along with my baseline cpu, as well as allow me to overclock that pentium to insane levels.

If you really want water cooling then I'd suggest Kraken X41, but personally I would stay away from the BS that come with water cooling like leaks and pump issues and get a solid air cooler. A Noctua U14S will allow you to overclock to silicon limits on the G3258 and get excellent overclocks on a later i5/i7.

[Faceman]

Cooler Master Seidon 240M from Newegg.com

 

But like I said in your other post, you should focus your money into an i5 before going water cooling.

 

Stay away from the H100i, it has a terrible mounting problem and it is not guaranteed to work for everyone out of the box without washer modifications.