Yea can remove the aftermarket CPU cooler for now, add only if temperature is not within your control, but it rarely happens though (for locked CPU) unless you are in a sauna room

Downgrade the mobo to H170-HD3 and use the extra money to get a better PSU like Seasonic M12II EVO/Superflower Leadex Silver/Gold.

And it is not worth pumping money to get the M.2 version of 850 unless you are on a disk drive clearance limitation.

Intel Core i5 6402P - RM 720
Gigabyte H110M-DS2 (D4) - RM 276
Kingston 8GB DDR4 2133MHz Value RAM - RM 161
Palit GTX950 2GB GDDR5 StormX - RM 609
WD Blue 1TB HDD - RM 209
FSP Hexa+ 450W - RM 166
Tecware F3 - RM 125
AOC E2180SWDN - RM 329

Total: RM 2595 (ETech price inclusive of GST)

Another option would be i3 + RX460 4GB/GTX960 (more GPU oriented).

Intel Core i5 6500 - RM 845
Gigabyte H110M-DS2 (D4) - RM 276
Kingston 8GB DDR4 2133MHz Value RAM - RM 161
Palit GTX750Ti 2GB GDDR5 StormX OC - RM 488
WD Blue 1TB HDD - RM 209
FSP Hexa+ 450W - RM 166
Tecware F3 - RM 125

Total: RM 2270 (ETech price inclusive of GST)

Intel Core i5 6500 - RM 845
Gigabyte H110M-DS2 (D4) - RM 276
Kingston 8GB DDR4 2133MHz Value RAM - RM 161
Palit GTX950 2GB GDDR5 StormX - RM 609
WD Blue 1TB HDD - RM 209
FSP Hexa+ 450W - RM 166
Tecware F3 - RM 125

Total: RM 2391 (ETech price inclusive of GST)

Intel Core i7 6700 - RM 1305
Gigabyte B150M-D3H (D4) - RM 379
Kingston 8GB DDR4 2133MHz Value RAM - RM 161
Zotac GTX1060 6GB GDDR5 Mini - RM 1169
Kingston SSDNow UV400 120GB SSD - RM 185
FSP Hexa+ 550W - RM 188
Tecware Alpha - RM 199
Acer R221Q IPS - RM 456

Total: RM 4042 (ETech price inclusive of GST)

Well, the specs is a bit overkill and the rig probably won't be able to fully utilize its potential. Remove the SSD to keep below your budget.

If only light gaming is involved then either one is fine.

If your dad is going for serious triple A titles gaming, then GTX1060 will run better in DX11/OpenGL games while RX480 excels in DX12/Vulkan titles, so far most of the games in the market are still running on older DX11 API so GTX1060 will pull ahead of RX480 in most of the benchmarks. What you get from RX480 is it is more "future proof", the extra 2GB VRAM and DX12/Vulkan performance (even though there are still many unsolved mysteries in DX12 ).

Both have pros and cons, I suggest you to go for the cheaper one if no serious/heavy gaming is involved.

Speaker with good sound quality, well this is a hard question for me as I am a headphone user, I will let it to others to recommend (if there is any) and leave some budget for it.

Intel Core i7 6700 - RM 1305
Gigabyte B150M-D3H (D4) - RM 379
Kingston 8GB DDR4 2133MHz Value RAM - RM 161
Zotac GTX1060 6GB GDDR5 AMP! - RM 1289
WD Blue 1TB HDD - RM 209
FSP Hexa+ 550W - RM 188
Tecware Alpha - RM 199
Acer R241Y - RM 620

Total: RM 4350 (ETech price inclusive of GST)

RM 150 left for speaker, SSD can be added if you decide not to get speaker (or just a cheap USB 2.0 speaker) with the rest of the budget.

Intel Core i5 6402P - RM 715
Gigabyte H110M-DS2 (D4) - RM 249
Corsair 8GB DDR4 2133MHz Value RAM - RM 161
Gigabyte GTX1060 6GB GDDR5 Windforce OC - RM 1210
WD Blue 1TB HDD - RM 225
FSP Hexa+ 550W - RM 189
Tecware Alpha - RM 219

Total: RM 2968 (Techview price inclusive of GST)

How much can you stretch? If it is around RM 500 then the choices will be BenQ GW2470H (VA)/Acer R221Q (IPS) etc.

Techview physical shop doesn't look like a normal PC shop, in fact they are more like an office, you need to knock the door (if it is closed) and their stuff will open for you. Overall the price and service offered by them are ok (at least for me), check the review online for more info.

Quality wise, well it is just a sub-par low tier PSU, if you can top up your budget, please get Seasonic M12II/S12II (Bronze), Superflower Leadex (Silver/Gold).

The PSU efficiency somehow does contribute to the total power draw and monthly bill statement but that will take a very long time before you can get the return from the "investment" you have put in a higher grade PSU. In overall, higher grade PSU is always a welcomed addition to the rig as it serves as the heart of all the components, so it is up to you whether to fork out extra for a good "heart"

Well they all are using H170 chipset so expect the features offered are very similar.

Few noticeable differences:
GA-H170-D3HP: Comes with USB 3.1 and USB Type C port (crucial for newer mobile devices which use Type C port)
GA-H170-Gaming 3: Uses LAN Killer instead of Intel LAN, one of the mobo in "Gaming" series
GA-H170-HD3: Uses Realtek LAN instead of Intel LAN
GA-H170M-D3H: -

It depends on your distance from your router, Internet subscription and budget etc.

If you aren't using super fast Internet package like TIME Fibre or UniFi 100Mbps then a cheap TP-LINK/Dlink USB WiFi dongle will do the job (802.11n max), otherwise AC dongle (make sure your router is capable of emitting AC signal too).

Intel Core i3 6098P - RM 443
Gigabyte H110M-DS2 (D4) - RM 249
Corsair 8GB DDR4 2133MHz Value RAM - RM 161
Zotac GTX750Ti 2GB GDDR5 Single Fan - RM 459
WD Blue 1TB HDD - RM 209
Corsair VS450 - RM 162
Tecware F3 - RM 119
BenQ GW2270H - RM 395

Total: RM 2197 (Techview price inclusive of GST)

Recommend you to save more and get this instead, it's better than rushing to get a 2k spec and regret later due to poor performance. If you really want to fit everything under 2k, downgrade the CPU to Pentium G4400 or GPU to GTX750.

AOC G2460PF - around RM 1150

Can go for GTX950 and a 120GB SSD with 2.5k budget.

Bottleneck? If the CPU is slower than GPU in resource feeding, bottleneck occurs, this is hard to guarantee as different software/games have different request on hardware, but GTX950 is just a low end GPU, should be a pretty easy job for the Skylake i3 to handle.

If not mistaken, Viewsonic MY had brought in few units, the price is quite attractive but no more news after that, probably had a bad sales so they decided to stop bringing new unit in

CPU upgrade is depends on the socket, so the upgrade room is pretty much locked to 2 generations (like Intel 6th and 7th gen both using LGA1151 socket), any upgrade beyond the same socket will require mobo upgrade too. As for GPU, it relies on the PCIe, if future GPU doesn't change the interface/connector specs/requirements then it will be usable on any mobo with PCIe slot (backwards compatible).

And you are getting the rig only or full set?

Your "Solid power pack" refers to UPS?

GTX1060 cheap? No it is not cheap, the cheapest 3GB variant price tag is nearly 1k, it will take almost half of your available budget.

Intel Core i5 6402P - RM 715
Gigabyte H110M-DS2 (D4) - RM 276
Kingston 8GB DDR4 2133MHz Value RAM - RM 161
Palit GTX1060 3GB GDDR5 Dual - RM 938
WD Blue 1TB HDD - RM 209
FSP Hexa+ 550W - RM 188
Tecware F3 - RM 125

Total: RM 2612 (ETech price inclusive of GST)

CPU: RM 1295
Mobo: RM 415
RAM: RM 169
GPU: RM 689
PSU: RM 199
HDD: RM 219
Case: Sharkoon VG5-W - RM 199

Price picked from Idealtech pricelist since the items listed by you were the items from Idealtech.

High end i7 6700 + low end RX460? I wonder what's the purpose of this rig? Rendering/Work? If it is for gaming, please put more budget in GPU instead of CPU.

Those peripherals can be bought as low as RM 500, provided you don't have special requirements on them (normal 1080p 60Hz TN, cheap Logitech KB & mouse combo and cheap Logitech USB 2.0 speaker).

I don't understand "power pack" term stated by you, that's why I asked if you are referring it to UPS, UPS stands for Uninterrupible Power Supplies, I don't think you need it now considering your budget isn't that healthy for it.

If it is not stated with any color rating then it is white, 80+ White, just like Corsair VS450/FSP Hexa+ 450W.

If you really want to have the "Bronze" rating then you can look for EVGA 450B, price is around RM 240.

EVGA PSU stocks just reached Malaysia last month so they are still quite limited in terms of available retailers.

80+ is a rating system, Titanium > Platinum > Gold > Silver > Bronze > White (mainstream one), these are the efficiency of the PSU, it has nothing to do with the 3rd party features offered by the PSU manufacturers like silent fan/0db fan feature/digital control etc.

What you get from Bronze over White is the little increment in terms of PSU efficiency but it is extremely hard to notice the difference in your monthly TNB bill. Higher efficiency = less AC power is needed to generate the same amount of DC power.

Your max budget is? If below RM 200 then just grab Corsair VS450 or FSP Hexa+ 450W, both will do the job just fine.

If we only compare the efficiency, then Bronze is of course better than White, but they are still many other factors that contribute to the quality of the PSU, like internal components, overall build quality etc.

Then your best option would be EVGA 500B (tier 3), slightly better than FSP Raider 500W (tier 4).