So good news. No throttling with this latest build!
Funny thing happens lately.
I skimp on voltage and run my miners lean: R9 290 1150MHz@-100mV FTW
It crashes in the night sometimes, like today. I turn on the display and blackness appears. Quick restart before the morning coffee and we are back in business. But looking at the hashing graphs, it seems that despite no display output, the cards mined all along.
The restart was on 10th around 4:00 o'clock
No drop in reported hashrate. Little dips around 18o'clock was me playing some CS:GO while mining ^^.
Very strange
Gonna lower voltages some more
Hmm. I just finished a similar build tonight but have no issues like you're describing.
H97 Anniversary
6xSapphire 480's
1KW Platinum EVGA
Quality risers from local Toronto area bitcoin. seller.
Windows 10
Latest AMD drivers.
Claymore 5.3
I built this milk crate slowly. Added one card at a time. The last card wasn't recognised at first but ended up being a dead riser board. I swapped it for another and it fired right up.
I should mention this was all with a clean install on a small 120GB SSD The IGP disabled, and using the x16 slot for the main card to hook up the monitor.
That's about it.
I have one more crate to build (6xMSI) and then have 4 more 480's to start replacing my 390's. This takes up way too much time but sure is fun.
Getting close to my goal...
If my house doesn't burn down I may hit it temporarily
New build. I used wider crates this time. Much better airflow and space between cards.
https://imgur.com/a/zp4aB
AMD may have accidentally created the world's best price/perf + perf/watt ethereum mining card with the 480.
I am starting to have 2nd thoughts about AIB RX 480 for ethereum mining. The Sapphire Nitro 4GB or 8GB use more power than the reference RX 480 8GB.
and
http://hexus.net/tech/reviews/graphics/94969-sapphire-radeon-rx-480-nitro-4gb-8gb-oc/?page=13
At the same time the memory isn't overclocking as well as on the RX 480 8GB reference. Kit-Guru got 8720mhz on the Nitro and Hexus got 8800mhz but reference cards can hit 9000mhz. The 4GB Nitro's memory is even more of a dog, hitting just 7000mhz at Kit-Guru and 7600mhz at Hexus. On top of that the AIB cards currently come with a big premium -- not sure it's justified for mining. Thoughts?
I can confirm this. I'm mining with dual 480's in my primary rig, one Gigabyte reference and the other is a Red Devil 480. At similar clockspeeds and voltages, the Devil is pulling about 20 watts more than the reference. I havent tinkered a ton since I've found settings I'm happy with, but it doesnt seem to undervolt as well as the reference gpu either.
How is 470 mining for you? What clocks and output?My SAPPHIRE NITRO+ Radeon RX 470 100407NT+8GOCL has slightly higher power usage compared to the MSI RX 480 I ran some benches on, but it also runs the GPU at 1260 MHz max and the memory at 2000 MHz, so it's almost a 480 sans the additional compute units.
Thanks for the info.
The only differences I see in our systems are Win 10 vs 8.1 and possibly the type of riser you use. Are you using the same style I am?
I tried adding one card at a time from a variety of slots and 5 cards work great in whatever configuration but the 6th card always shows up as a Code 43 (disabled device). I tried switching the riser out with no luck. Tried changing the PCIE speed to 1st Gen. The 6th card just doesn't want to work.
All cards are using powered risers. Sounds like at least one of your cards is in a full-size x16 slot. I've heard of people shorting out pins on some of the full-size slots to make it work with 5-6 GPUs. Any experience with that?
I finally saw the throttling for the first time. I was using 4 x rx480 on 2 PCI-E x16 slots and 2 on riser. Then switch it to 1 PCI-E x16 and 3 on riser, the risers were powered by 2 individual SATA and 1 Molex cable on single rail psu. I was using 16.7.2 as well as 16.8.1.
The problem goes away eventually, not sure how though.
I added the 5th card back to the 2nd PCI-E x16 and still no throttling, so it's not the new/old drivers doing it. I suspect it's more likely due to the SATA power cable.
My first batch of 4GB cards seem to be the best to me, the 8GB card that I keep receiving, one need 950mv to hit 1025-1050 core. The last 2 MSI I got need 975mv to hit 1025, with ASIC at 74 and 79. It looks like the best card to have for mining is the one with the lowest default voltage at state 3 and low ASIC.
Out of the 7 480 I have now, 4 can do 2220 mem, 1 at 2200, 1 at ~2175 still testing, 1 at 2080.
This is the one that need 975mv to hit 1025 core.
I leave all the card at 90/80 temp though, as 85/70 doesn't seem to help the 975mv card, so I didn't bother testing for the lower voltage card I have previously.
Awesome. Where are you getting those enlarged milk crates ? Are you connecting the PCIe risers directly with molex or via the SATA ports?
I have been looking at used R9 390 prices and I think I am going to replace R9 390 with 2 RX 480s. The only card I think I'll have trouble getting good resale from is the R9 295X2.
Also, just realized today that Newegg's 2 order limit per customer is only in effect for 48 hours. I already have XFX, Sapphire, PowerColor RX 480s and I thought I am going to run out of AIBs to buy but now that I know I just have to wait 48 hours to place more orders in, it's an all new ball game!!
AMD may have accidentally created the world's best price/perf + perf/watt ethereum mining card with the 480. We are basically getting better perf/watt and MH/watt than the R9 Nano for less than half price just a year later. Remember that one guy mining with 96x R9 Nanos? Hopefully he sold them on time hehe.
I am starting to have 2nd thoughts about AIB RX 480 for ethereum mining. The Sapphire Nitro 4GB or 8GB use more power than the reference RX 480 8GB.
and
http://hexus.net/tech/reviews/graphics/94969-sapphire-radeon-rx-480-nitro-4gb-8gb-oc/?page=13
At the same time the memory isn't overclocking as well as on the RX 480 8GB reference. Kit-Guru got 8720mhz on the Nitro and Hexus got 8800mhz but reference cards can hit 9000mhz. The 4GB Nitro's memory is even more of a dog, hitting just 7000mhz at Kit-Guru and 7600mhz at Hexus. On top of that the AIB cards currently come with a big premium -- not sure it's justified for mining. Thoughts?
---
On the other side of the pond, the competing brand is approaching 58% gross margins (appalling if you ask me because people keep celebrating/cheering how "well NV is doing"). All I see is how much more I am being asked to pay towards JHH's Ferrari Fund as every quarter margins keep rising. Even Apple, considered by many a premium brand that charges an arm and a leg, is only at 38%. It makes me sad how unbalanced the GPU world has become that the cheer-leaders of a certain brand are celebrating the consumer's wallets getting opened wider and wider. / rant
Do any of you (especially those with multiple rigs) keep an HDMI dongle plugged in? (Are they necessary?)
This looks nice, but it's US$ 20 each... any cheaper DIY options?
https://www.headlessghost.com/
PM'ed youNot necessary with 480's or 390's running Windows 10 anyway. I usually leave a dongle hooked up to my main card in the rig for maintenance purposes but they run just fine without dongles or dummy plugs.