Hi all, just checking back after I went to my local store. I can't find anything in my list from newegg -.-||| So I have to go for similar stuff. This is what I have right now. Choice of Mobo is so that I could upgrade to 1100T Chip if Bitcoin doesn't work out PSU just course the prices are so close and there ain't 1 GB rams around anymore -.-|||

GPU1: ATI Radeon HD 5970 - $488 - (350 W)

GPU2: ATI Radeon HD 5850 - $162 (200 W)

MOBO: Biostar TA890FEX + CPU: Athelon II X2 - $202 (150 W + 255 - 65 W | 1100T - 125 W = 215 W | 375 W)

PSU: Seasonic 850 AT80+ - $126

RAM: 2 GB DDR3 1333 Mhz - $23 (10 W)

Basic: $351 + GFX: $650

Per Rig: $1001

650 Mhash/s + 350 Mhash/s= 1 Ghash/s

2 Rigs Statistic

2 Ghash/s | $2002 | (502 W~775 W) x 2 = 1004 W ~ 1550 W

$1.001s/Mhash | 1.992~1.29 Mhash/J

Current Difficulty

2^32*244139 = 1,048,569,020,678,144 hash

Mining Solo

@ 2Ghash/s -> 524284.51 seconds - 145.6346 hours - 6.06811 days

30 days/6 days (per Block) => 5 Blocks * 50 BTC = 250 BTC * 6.2949 USD = SGD $1,573.725 /mth (SGD $ 52.4575/day)

Lower Limit

Power Consumption: 1.004 kW * $0.20/kWh * 24 * 30 = $144.576/mth ($4.8192/day)

Profit $52.4575 - $4.8192 = $47.6383 /day

Days to breakeven = 42 days

Upper Limit

Power Consumption: 1.550 kW * $0.20/kWh * 24 * 30 = $223.20/mth ($7.44/day)

Profit $52.4575 - $7.44 = $45.0175 /day

Days to breakeven = 45 days

Mining Pool (Slush)

Current 70 Mhash/s ~ 0.3 BTC/day ~ $1.88847/day

@2 Ghash/s ~ 8.57143 BTC/day ~ $53.96/day

Days to Breakeven

Lower: $2002/[$53.96 - $4.8192] = 41 days

Upper: $2002/[$53.96 - $7.44] = 43 days

~43 Days

Can someone verify that I'm doing the right way of calculating and stuff. Because I'm very new and am just picking stuff up from the forum. I'm not sure if I'm doing the right calculations. Thanks

and do comment on my rigs.

P.S Oh I forgot to factor in the PSU efficiency sorry so assuming it's 80+ Ready @ 80% minimum theres a x1.25 factor to the figures I'm using for both upper ($9.30/day) and lower limit ($6.024/day). Theres a +1~2 Days difference so I'm sitting on 45 Days till breakeven.

P.P.S The price for 5970 is low because I've got a deal from someone I know. I'm getting 2x this rig so instead of putting both of them in 1, I decided to separate the power distribution. Please advice on this too