GPU | 68xx Series | HD 68xx Series

[jono...@gmail.com]

I want to share info re my 6850 Toxic. I did a variable intensity study and these are the results:

cgminer			amd ccc
Intensity	Hashrate	Unit	Activity	GPU clk	Unit	Mem clk	Unit	Temp	Unit	Fan
8	17 - 18	Kh/s	96%	820	MHz	1100	MHz	62	C	45%
9	35 - 36	Kh/s	96%	820	MHz	1100	MHz	65	C	45%
10	70 - 74	Kh/s	98%	820	MHz	1100	MHz	68	C	45%
11	140 - 150	Kh/s	98%	820	MHz	1100	MHz	70	C	55%
12	134 - 135	Kh/s	98%	820	MHz	1100	MHz	68	C	60%

Notes:
1.I call attention to #s for intensity=12, where the kh/s actually goes down.
2.As the intensity rises, the video becomes more unresponsive.
3.I tried intensity 15 for a brief time, did not burn-test by any means, just FYI the hashrate at I=15 was around 200kh/s
4.I read in another forum that Intensity=18 yielded 270kh/s (not indicated kung toxic yun 6850 nya)

[jono...@gmail.com]

BTW, yun intensity 12 ay useable pa rin naman ang pc. Nkakapag FB, word at excel pa rin ako. Pero since I=12 yields lower hashrate than I=11, I stick to I=11 na lang. I use the PC 10-16 hrs a day, so based on current difficulty of 1771, i can get 340 - 540 doge a day (konti ano?)

Ang kulang sa data ko sa itaas ay yun watts used for the different intensity levels. I will buy ang OMNI brand watt meter next week so I can collect this data.

BTW, a request: I hope somebody can post numbers din for R9-280X based on the different intensity levels. KUng pwede sana pati yun watts used at those intensity levels.

Ang balak ko kc as next step is to buy 1unit lang muna R9-280X and do side-farming.. the info would help very very much =)

[jono...@gmail.com]

I have additional info to share. This time, meron na ako data re watts used with the varying intensity. U can see table below, expansion lang sya ng table sa itaas:

cgminer

amd ccc

Date of Reading

Baseline Wattage

Incremental

Other Notes

Intensity

Hashrate

Unit

Activity

GPU clk

Unit

Mem clk

Unit

Temp

Unit

Fan

220	W	Watt usage

8

17 - 18

Kh/s

96%

820

MHz

1100

MHz

62

C

45%

1/26/2014	245	W - 55% fan	25

9

35 - 36

Kh/s

96%

820

MHz

1100

MHz

65

C

45%

1/26/2014	250	W - 55% fan	30

10

70 - 74

Kh/s

98%

820

MHz

1100

MHz

68

C

45%

1/26/2014	260	W - 55% fan	40

11

140 - 150

Kh/s

98%

820

MHz

1100

MHz

70

C

55%

1/26/2014	277	W - 55% fan	57

12

134 - 135

Kh/s

98%

820

MHz

1100

MHz

68

C

60%

1/26/2014	272	W - 55% fan	52
13	172 - 178

Kh/s

98%

820

MHz

1100

MHz

71	C	60%	1/26/2014	284	W - 60% fan	64	PC is now unresponsive
14	192 - 195

Kh/s

98%

820

MHz

1100

MHz

72	C	60%	1/26/2014	292	W - 60% fan	72	PC is very laggy
15	212 - 218

Kh/s

98%

820

MHz

1100

MHz

74

C

60%

1/26/2014

298

W - 60% fan

78

PC is almost unuseable

Note: my baseline wattage includes all electricals sa mesa ko, 2 pc monitors, switch hub, 2 UPS, dsl modem, etc.

I'm really hoping somebody can provide similar data for higher end video card like the R9-280X.

Anyway, what do the numbers mean, right? Ito yun analysis ko:

I choose intensity 11 for my normal usage lang. I use PC 10 hrs a day, for example, so I mine 10hrs a day at 148kh/s. based sa calculator, my DOGE yield is about 50 / hour. In 1 day, that's 500 DOGE based on 10 hrs mining time.

Electricity cost: kung 60w ang incremental electricity used sa mining, that's like I pay an extra Php0.78 per hour based on assumed 13pesos / KWH ng meralco.

So then I pay 0.78peso for each hour of mining, and in return I get 50doge, which is currently valued at 3.77 pisos. This means I get a staggering 2.99 pesos per hour that I use my computer. It sounds silly kung gagawin undertaking in this manner, pero basically it's a system that pays me for using my computer.

Tapos kung gagawa na ako ng actual mining rigs with max mining power.. to the moon na nga hehehe