Pretty tight budget there, I have to include in a cheaper mouse & keyboard combo. You can upgrade them next time.

Intel Pentium Dual Core G3220 - RM174
Asrock H81M-DGS - RM179
Corsair Value Ram 4GB DDR3 1600MHz - RM119
WD Caviar Blue 1TB HDD - RM189
MSI HD 7790 - RM399
Gigabyte GZ series casing - RM69
FSP Hexa 500W PSU - RM149
Lite-On 24x DVDRW - RM59
Acer S220HQL 21.5" monitor - RM359
Logitech Wired Combo MK200 - RM45
Edifier M1360 2.1 Speakers - RM89

Total - RM1830 (prices are from Viewnet)

You get what you pay for. Maybe can consider i3 if your budget allows. You open tons of browser tabs, then adding another 4GB RAM may be helpful.

Intel Core i3 4130 - RM364
Asrock H81M-DGS - RM179
Corsair Value Ram 8GB DDR3 1600MHz - RM229
WD Caviar Blue 1TB HDD - RM189
MSI HD 7790 - RM399
Gigabyte GZ series casing - RM69
FSP Hexa 500W PSU - RM149
Lite-On 24x DVDRW - RM59
Acer S220HQL 21.5" monitor - RM359
Logitech Wired Combo MK200 - RM45
Edifier M1360 2.1 Speakers - RM89

Total - RM2130 (prices are from Viewnet)

I5 4440 (579)
8GB value ram (239)
Asrock B85 (239)
WD Blue 1TB (189)
Sapphire R9 270 (679)
FSP Hexa 500w (149)
CM's case (149)
Monitor (499)
ODD (59)

Subtotal RM2.78k

The extra money can be used to get or buffer for better parts, which ever you need/prioritize:
Wireless card/dongle
Fans
OS
Better PSU
Better GPU
Better MOBO
Better CPU

Intel Core i3 4130 - RM379
Asrock H81M-DGS - RM179
Corsair Value Ram 8GB DDR3 1600MHz - RM239
WD Caviar Blue 1TB HDD - RM189
Gigabyte GZ series casing - RM69
FSP Hexa 500W PSU - RM149
Leadtek GTX 650 Ti Boost 1GB GDDR5 - RM499
Lite-On 24x DVDRW – RM59
Viewsonic VX2370S 23" monitor - RM499

Total - RM2261 (prices are from Viewnet)

I3 4130 (369)
4gb value ram (129)
Asrock B85 (239)
WD Blue 1TB (189)
AMD 7770 (399)
FSP Hexa 500w (149)
CM's case (149)
Viewsonic Monitor (499)
ODD (59)

Subtotal RM2.18k

If can't find 7770, then substitute with whichever GTX650 under the RM400 budget.
Keyboards and mouse to be add on seperately.

Yar, but it is hard to push it higher with your budget, except may be you want to downgrade to a smaller HD screen.

The games and your usage don't really need too much power, hence my recommendation should still be valid and applicable.

More often than not, a GPU upgrade will usually improve your gaming performance. The i3 included in the quote is good enough for most cases, but if possible an i5 would be better. But this is purely optional.

Only the HD7850 2GB variant is available... The HD7850 is quite a bit faster than the HD7790...

Looks good to me, I'd consider sacking the SSD at themoment in favour of a more powerful GPU and PSU actually but this rig works well enough for mid/high gaming
7850 obviously, its the same series of GPU so the higher the number, the better

the V-RAM doesn't do a thing to make it better than the 7850 and note that the 7850 also can be Overclocked easilly via MSI afterburner... not that Overclocking the 7790 will reap much performance hike as well

lol and so is the 7790 but you could go for thr R series now, an R9 270x is technically a HD7870 but faster

you're looking at RM739 and above

Which R9 you want? If R9 290, I don't think enough budget even for the GPU alone. So can consider i5 + HD 7850 first. Then ditch the 7850 for R9 290 when you have more budget.

Cheapest would do, i5 4440 - RM579.

instead of setting for a smaller budget for certain components... I'll try to adjust the whole rig specs on based on the same budget

Intel Core I5 4440 RM579
Asrock B85M-ITX RM299
Corsair 8GB Value RAM RM239
WD blue 1TB HDD RM189
Sapphire R9270x RM739
FSP Hexa 500W RM149
CM Elite 120 RM139
Tplink TL-WN821N RM29

Total RM2362