Speaking of benchmarks, anyone know if OC editions with extra memory do much at all for mining on a 290x? I assume it doesn't make much of a difference.
memory isn't going to help at the moment until DAG grows in size. you'll get ~2 years of mining out of a 3GB ram card. ~ 2.6 years out of a 4GB ram card.
The DAG is growing, so it will be too big after some years. I have seen similar calulations previously. But the switch to POS should be done before 2.6 years anyway, with good margin.
@Technologov , I think that DAG is expected to grow by 1.7x every year. So if you start with DAG at 1GB, then by the end of year 1 you are at 1.7 GB, and the end of year two you are around 3GB. I can't remember exact source of the 1.7x growth, somewhere buried in the /r/ethereum
i start mining with one R9 390x and give this result :is it good ????
Found suitable OpenCL device [Hawaii] with 8589934592 bytes of GPU memory Benchmarking on platform: GPU Preparing DAG... Warming up... i 07:22:27|gpuminer0 workLoop 0 #00000000… #00000000… i 07:22:27|gpuminer0 Initialising miner... Using platform: AMD Accelerated Parallel Processing Using device: Hawaii(OpenCL 2.0 AMD-APP (1912.5)) Printing program log
Creating one big buffer for the DAG Loading single big chunk kernels Mapping one big chunk. Trial 1... 0 Trial 2... 0 Trial 3... 0 Trial 4... Creating buffer for header. Creating mining buffer 0 Creating mining buffer 1 10911754 Trial 5... 26441288 min/mean/max: 0/7470608/26441288 H/s inner mean: 12451014 H/s Phoning home to find world ranking...
@shutfu how do you get such a high hashrate? I've overclocked my core to 1155 and kept mem at 1500 and only getting about 29.5-30 mhs average. I have the sapphire nitro edition which runs at about 73 C
This settings was tested on my 4xSapphire_r9_390 with claymore mode=1 (mode=0 - consumes more power): cclock=1050, core -50mV, AUX -50mV, 30MH/s, VDDC Power In 160W cclock=1150, core -31mV, AUX -31mV, 32,5MH/s, 190W I don't post the temperature, because I still waiting for risers from china, and they just stay in common cases ) And the question: is any way to underclock memory? Sapphire don't let me to underclock less then 1500, but GPU Z says that memory is load only at 81% at 1150Mhz core (72% at 1050Mhz) and i think that underclocking memory will help me to save GPU_power/temperature/cooler_power/VRM_efficiency/and_so_on ) p.s. sorry if i missed_same_thread/wrong_thread. I am a newbie internet resident ) p.p.s of course i try to overclock memory, but this have no effect, so I think I can underclock. p.p.p.s sorry for my "interstellar" accent
Comments
Night race 1080p Ultra 8fx16xEQAA - 134 FPS
Ultra preset 8xMSAA - around 170 FPS during night race.
Hitman Aboslution - 1080p, Ultra 2x MSAA - Around 70 FPS
1080p Ultra 8xMSAA - 59-60FPS
EDIT;; Battlefield 3 Ultra Preset 1080p with 90 FOV ( normally set at 70) around 110-170fps (depending on map)
Racedriver GRID ( 1st one) 1080p Ultra/Max settings - around 190 FPS
Unigine Heaven - 1080p, Ultra Preset, 8x MSAA, Extreme Tessellation - 54-56 FPS
Furmark - 1080p Preset -4303 Points - Avg 71 FPS
3DMark 11 - P12564 Graphics score-17068 Physics score -6955 Combined score - 7102
Linux / Debian stable 8.1 / XFX R9 390x 8GB / Eth 0.9.34
min/mean/max: 26.17 MH / 26.28 MH / 26.36 MH
inner mean: 9.86 MH/s
(esp. since I can get a 30% discount on used 290/290X cards, but no discount on 390/390X cards)
Also how did you calculate that 4 GB RAM will not be enough in 2.6 years ? I wanna understand this formula. And 8 GB will be enough for how long ?
Found suitable OpenCL device [Hawaii] with 8589934592 bytes of GPU memory
Benchmarking on platform: GPU
Preparing DAG...
Warming up...
i 07:22:27|gpuminer0 workLoop 0 #00000000… #00000000…
i 07:22:27|gpuminer0 Initialising miner...
Using platform: AMD Accelerated Parallel Processing
Using device: Hawaii(OpenCL 2.0 AMD-APP (1912.5))
Printing program log
Creating one big buffer for the DAG
Loading single big chunk kernels
Mapping one big chunk.
Trial 1... 0
Trial 2... 0
Trial 3... 0
Trial 4... Creating buffer for header.
Creating mining buffer 0
Creating mining buffer 1
10911754
Trial 5... 26441288
min/mean/max: 0/7470608/26441288 H/s
inner mean: 12451014 H/s
Phoning home to find world ranking...
Default clock undervolted I got 28 mhs.
with 1100 clock and 1625 memory I get around 31 mhs
hottest of all my cards though at 81-84C
cclock=1050, core -50mV, AUX -50mV, 30MH/s, VDDC Power In 160W
cclock=1150, core -31mV, AUX -31mV, 32,5MH/s, 190W
I don't post the temperature, because I still waiting for risers from china, and they just stay in common cases )
And the question: is any way to underclock memory? Sapphire don't let me to underclock less then 1500, but GPU Z says that memory is load only at 81% at 1150Mhz core (72% at 1050Mhz) and i think that underclocking memory will help me to save GPU_power/temperature/cooler_power/VRM_efficiency/and_so_on )
p.s. sorry if i missed_same_thread/wrong_thread. I am a newbie internet resident )
p.p.s of course i try to overclock memory, but this have no effect, so I think I can underclock.
p.p.p.s sorry for my "interstellar" accent
overclock.net/t/1561372/hawaii-bios-editing-290-290x-295x2-390-390x