I'm also not sure. Just saw one video about it. That's​ why I say take my advice with a grain of salt. The video only say higher rate ssd much better for higher rate cpu. It's was Techdeal on YouTube.

Should I get the M.2 form factor ?

Taking this setup you recommended earlier as the price is suitable too:

AMD Ryzen 5 1600 - 1039
MSI A320M Grenade - 335
Corsair 8GB DDR4-2133 X1 - 260
Zotac GTX 1060 6GB DDR5 Mini - 1229
Corsair VS 550W - 248
Tecware F3 case - 124

RM3235 total (C-Zone prices)

Am aware to add a 1 TB disk of RM210 to this and may not need a monitor if i can keep mine (currently use a Samsung Syncmaster B2230)

Purpose will be for gaming (Dota 2 and CSGO only). Would appreciate if you could propose a good price/performance setup for budget of around RM3k without monitor. Need the list to head to the store soon. Am a newbie in this.

How about Evga...what model would you recommend. The shop don't sell Superflower model. Corsair , Silverstone , Seasonic , Raidmax & Evga only.

How about this model

1. Corsair CX650 - RM339
2. Silverstone ST600 - RM385
3. Evga 650GQ - RM459

Some adjustments

AMD Ryzen 5 1600 - 1039
MSI A320M Grenade - 335
Corsair 8GB DDR4-2133 X1 - 260
Sapphire RX 460 4GB DDR5 Nitro+ - 642
WD Blue or Seagate 1TB - 212
Super Flower Leadex Silver 550W - 359
Tecware F3 case - 124

RM2971 total (C-Zone prices)

Oh the shop that you are going to purchase your rig still got Seasonic PSU in stock? If yes then try to look for M12II-EVO, or spend more money in an EVGA 550W G2 (650 GQ if they don't have the G2 unit, G2 > GQ in terms of quality and warranty period).

Thanks again for the help! Can u please advise why the difference in the graphics and power supply? What am I getting on Saphire RX 460 over the initial one? 

Also, will I need to change my monitor? Currently use Samsung Syncmaster B2230.

Cheers!

Budget issue. RX 460 is slower but good enough for dota and cs. Power supply is higher quality.

Hard to tell when got budget issue. There are better monitors out there.

Dear sifus,
My preferred build would be as follow : Please help to check if there's any bottleneck or should I up my graphic card to 1080?
i7 7700K
Gigabyte Z270-HD3
Gigabyte GTX 1070 G1 Gaming
Samsung 850 EVO SSD 250GB
WD Blue 1TB
EVGA SuperNova 550 G2
Tecware Alpha
Monitor: Dell U2717D or Dell S2716DG (will the 60Hz-IPS vs 144Hz + Gsync-TN affect gaming and color by much?)

Got but really expensive. They only have P860 & X-650/750/1050 model.

They do have Evga G2 unit but lowest is 650watt. Should I invest more if in the future I overclock? Not even sure if I want to overclock. Might ended up with much more expensive things if going that way with maybe just a little gain?

You need an aftermarket CPU cooler for that 7700K as it doesn't come with Intel stock cooler.

As for the monitor, if you never try 144Hz before or not going to play fast pace & competitive games then 60Hz will do just fine, I always prefer color > refresh rate as I am not a FPS gamer 
You can't go wrong with good quality PSU, it can last for many years and you can re-use it when you upgrade your system in the future. If you don't mind the extra cost then it shouldn't be an issue 

The initial RM3.2k is actually fine. Think I might just go for a 1060 graphics card.

Will Intel5 7600 be better than AMD Ryzen5 1600 for gaming? Thanks a lot for explaining!

Guys,

EVGA vs Nvidia 1060? Or AMD RX580??

Cheers

You can't go wrong with good quality PSU, it can last for many years and you can re-use it when you upgrade your system in the future. If you don't mind the extra cost then it shouldn't be an issue 

around how much for the aftermarket cooler? Do you think I need the 7700k and Z270 mobo for the Dell monitor U2715H and 1070 graphic card?

So better get Evga G2. I see if I can stretch my budget. GQ still a good option?

If you are going for mild CPU overclocking (~ +0.3GHz offset), then you might be able to get away with RM 200 - RM 300 cooler (air or liquid AIO). For heavy CPU overclocking, you are advised to get a high end CPU cooler, they are not cheap (mostly > RM 500).

CPU overclocking doesn't bring significant performance boost in gaming, at least not until your CPU starts to slow down in the next few years (probably will take > 5 years), stick with 7700 and normal B250/H270 if you want to save money or not going to overclock the CPU as it comes with Intel stock cooler.

How about clockspeed? I7-7700 have 3.60Ghz while 7700k have 4.20Ghz...will this impact anything if no OC

Im thinking of upgrading my display to 1080p, is it possible with 2k budget(including monitor)?
My current PC:
Monitor: LG20en33
CPU: i3-3220
MOBO: not sure
PSU: FSP hexa+ 550
GC: Sapphire HD 7790
4gig RAM
Casing: Bitfenix prodigy M

Mainly used for gaming