High settings average 45 FPS.

Medium settings would be more ideal for stable 60 FPS.

Both are based on 1080p, if 720p then max settings won't be a problem.

If you want to play games like Far Cry 4, don't go shortcut and get the cheapest rigs, some games cannot run properly on them, either you get a very low frame rate or it doesn't run at all, for example, Far Cry 4 won't run on a dual core Pentium.

Can

Looks good.

Tan Sri's rig?

Intel Core i7 5960X - RM 4525
Asus X99 Deluxe - RM 2075
GSKill TridentZ 32GB (8GB x 4) 3200MHz RAM - RM 1518
EVGA GTX980Ti 6GB GDDR5 SC+ SLI - RM 6798
Samsung 850 EVO 1TB SSD - RM 1699
WD Black 4TB HDD - RM 949
Seasonic P1050 - RM 1249
Corsair Hydro H110i GTX - RM 699
Corsair Graphite 760T - RM 979

Total: RM 20491 (Idealtech price inclusive of GST)

I am using "almost" the most high end/expensive hardware, 2-way SLI in this build, you can easily up to quad SLI since the CPU is 40-lane one (remember to upgrade PSU too if you go for quad SLI )

Intel Core i3 6100 - RM 510
MSI B150M Bazooka D4 - RM 399
Corsair 8GB DDR4 2133MHz Value RAM - RM 200
Gainward GTX750Ti 2GB GDDR5 Golden Sample - RM 550
Kingston HyperX Fury 120GB SSD - RM 229
WD Blue 1TB HDD - RM 215
FSP Hexa+ 550W - RM 189
Deepcool Tesseract - RM 129
AOC i2360SD IPS - RM 499

Total: RM 2920 (Techview price inclusive of GST)

Keyboard/mouse/speaker/OS not included yet.

You can't run Fallout 4 at highest settings at 60 FPS with your current budget, if you don't mind low FPS then go ahead.

Intel Core i5 6500 - RM 876
MSI B150M Bazooka D4 - RM 399
Corsair 8GB DDR4 2133MHz Value RAM - RM 200
Zotac GTX960 2GB GDDR5 ITX - RM 799 (Christmas promotion)
Kingston HyperX Fury 120GB SSD - RM 229
FSP Hexa+ 550W - RM 189
Deepcool Tesseract - RM 129

Total: RM 2821 (Techview price inclusive of GST)

Mobo with extra space for future upgrade? Do you mean more RAM slots? Or SATA? Or PCI-E? The mobo chosen above has 4 RAM slots and 6 SATA 3 ports as well as 1 PCI-E x16 (standard) and 2 PCI-E x1 slots, should be enough for you, if you mean you want SLI/CF feature, then it is way too much for your budget, Z170 mobo with SLI/CF feature will cost at least RM 700+/-.

You have some budget left, either swap to ATX mobo (with more PCI-E slots etc.) or change to a better case (your own choice but make sure the form factor is correct) or get a better PSU.

It depends on the game you play, if the game is optimized to use the extra threads or hyperthreading technology of i7, you will see quite a significant improvement, if no then it could be just a few or close to zero FPS improvement.

Not much, Fallout 4 and AC: Syndicate are among the latest games that utilize the extra threads more "efficiently" than other games.

ATX
Intel Core i5 6500 - RM 855
ASRock H170 Pro4 - RM 595
GSKill NT 8GB DDR4 2133MHz Value RAM - RM 249
Palit GTX970 4GB GDDR5 Reference - RM 1299 (After rebate RM 100)
Samsung 750 EVO 120GB SSD - RM 249
WD Blue 1TB HDD - RM 219
Seasonic M12II EVO 620W - RM 409
TP-LINK TL-WN881ND PCI-E WiFi - RM 65
NZXT S340 - RM 320
BenQ GL2460 - RM 539
Windows 7 Pro OEM - RM 200 (Free upgrade to Windows 10 until July 2016)

Total: RM 4999 (Idealtech price inclusive of GST)

mATX
Intel Core i7 6700 - RM 1375
Gigabyte B150M-D3H - RM 439
GSKill NT 8GB DDR4 2133MHz Value RAM - RM 249
Palit GTX970 4GB GDDR5 Reference - RM 1299 (After rebate RM 100)
WD Blue 1TB HDD - RM 219
Seasonic M12II EVO 620W - RM 409
TP-LINK TL-WN851ND PCI-E WiFi - RM 75
CM N200 - RM 209
BenQ GL2460 - RM 539
Windows 7 Pro OEM - RM 200 (Free upgrade to Windows 10 until July 2016)

Total: RM 5013 (Idealtech price inclusive of GST)

Just a reference because your budget can have few flexible build, you can spend less on casing and go for better GPU and add in SSD etc.

Not much difference apart from the design/cooling solution, from the current market pricing, Asus/MSI/Gigabyte/EVGA GTX970 is somehow "overpriced", most of them breached 1.7k mark. You end up paying more if you get those premium brands but getting similar performance in terms of frame rate, unless you are going for aesthetic purpose.

If you really want other brands, the cheapest would be EVGA ACX2.0+.

i7 has extra 4 threads (hyperthreading), i5 doesn't have, only few games utilize hyperthreading now, but if you want future proof, go for i7 instead. Performance difference between i5 and i7 is small for current gaming era (DX11), things might change when DX12 becomes mature in a few months/years.

Assembling is normally FOC for most of the shops, i.e. Idealtech, Techview, ETech etc.

And lastly Idealtech doesn't carry MSI product.

Idealtech pricelist is stating full rig can get RM 100 off on GPU, so I am not sure if the price shown in the pricelist is already discounted or before discount, interested buyer can ask them for a quotation.

Yes R7 370 is better but is more expensive, R9 270 is RM 529 only from Techview, you can consider it too.

Since you only play Dota 2, either one is fine.

Stock cooler is enough.

No more ATI after AMD bought it FYI

Idle power consumption is almost similar, but during gaming, R7 370 draws significantly more power than GTX750Ti, since you aren't a hardcore gamer and only play Dota 2, go for GTX750Ti instead, it is enough to max out Dota 2.

Brand name.

Those are "premium" brand, it has slightly better design/cooling solution/warranty etc in some people's opinion. If you have budget or just want it for aesthetic purpose, go ahead, I won't stop you

Performance is about the same.

Do you mean ASRock B150M Pro4 and Gigabyte B150M D3H?

The M indicates the form factor, it is very hard to find DDR4 based ATX mobo at RM 400 price range.

ATX, mATX, mITX are among the most popular form factors.

ATX is the second largest mobo after EATX which can be found easily in our market, mATX is slightly smaller than ATX (lesser PCI-E slot) and is the cheapest form factor, mITX is mini size mobo for small form factor rig, only comes with 2 RAM slots and single PCI-E x16 slot.

So for your case, the mobo chosen is mATX.

An overclocked GTX970 can match the performance of stock GTX980 which makes GTX980 not worth the money.

All about the "premium" brand name, they are still GTX970 so performance won't be having much different TBH, just get the cheapest or mid end one, 1899 for a GTX970 is just too much, R9 390X has better raw performance at same price point.

R9 390X is great but at the same time it is a power sucker also

One of the important facts that you need to take note when buying AMD card is Nvidia GameWorks sabotage, performance won't be as good as same tier Nvidia card, so don't expect it will outperform GTX970/980 all the time.

Enjoy your rig