Which GPU to purchase with $200 for Ethereum mining?

[Raja_MBZ]

Well today I bought the core 2 quad with good configuration for $100 and now planning to spend my bucks on R9 280X. As far as I can see, that's the best graphic card available within my budget for Ethereum mining. BTW, just saw that the power supply I got in my CPU is just 350W. Well I've got to exchange that off with a good one, I guess.

[antantti]

i think the problem may occur only with more than a certain number of gpu, say 5-6

i noticed this in many algo, now on neoscrypt i'm getting 20-30 kh less on each card that is running with the g1840, the single card running with the i7 beast is sitting at 670-678 EVEN when i use the pc

but perhaps it has to do because of the number of gpu itself, the more gpu you have in one rig, the more hash you lose overall on that rig? can anyone confirm?

we are however talking about minimal losses, nothing major...

Some algo/os/cpu/ram/miner combos are cpu limited when you have multiple GPU´s.

[MorningCoin]

better we wait the Rx 480 maybe Rx 490 will come soon

[Amph]

i think the problem may occur only with more than a certain number of gpu, say 5-6

i noticed this in many algo, now on neoscrypt i'm getting 20-30 kh less on each card that is running with the g1840, the single card running with the i7 beast is sitting at 670-678 EVEN when i use the pc

but perhaps it has to do because of the number of gpu itself, the more gpu you have in one rig, the more hash you lose overall on that rig? can anyone confirm?

we are however talking about minimal losses, nothing major...

Some algo/os/cpu/ram/miner combos are cpu limited when you have multiple GPU´s.

that's what i was talking about, now my question is if one buy a i3 core/4 thread, they will remain cpu limited or not?

[bugsywugsy]

My triple-GPU Nvidia Win7 rig (2x 950 1x 960) runs a 4-core APU - AND also runs the DNet client on the APU's GPU part, AND Prime95 on all 4 CPU cores
 I DO notice that one of the CPU cores seems to run Prime a LOT slower than the others - obviously the one that's actively running the system and various software.

 I don't notice ANY hashrate difference between when I'm runnnig all of it and just running the miner by itself.

 The only difference I've seen on multi-core CPU vs single-core is during DAG file creation - I sometimes get 2 DAG file "threads" running at the same time, and the system doesn't seem to bog down as much.

 The Big Rig (triple AMD R9-290) is quite happy with it's Semperon 145 - though when I shift it over to something else after ETH gets unprofitable I'll probably swap one of my X240 dual-cores in it's place - planning to build a new file server and that 145 would be overkill for it.



 Might it be the g3240 is just too slow clocked, rather than being single-core? I don't know Intel low-end CPUs well enough to rememeber even appx specs on their G-series stuff.
 Semperon 145 is the same series as the X240 (Regor) except it's got one core disabled, I forget which clocks higher but might be the same - 2,8 Ghz comes to mind.

Aren't the G series dual core? Dual core has been around forever... Anyway, you can clock those things to 4.2ghz+, that's what they're good for.

[Amph]

My triple-GPU Nvidia Win7 rig (2x 950 1x 960) runs a 4-core APU - AND also runs the DNet client on the APU's GPU part, AND Prime95 on all 4 CPU cores
 I DO notice that one of the CPU cores seems to run Prime a LOT slower than the others - obviously the one that's actively running the system and various software.

 I don't notice ANY hashrate difference between when I'm runnnig all of it and just running the miner by itself.

 The only difference I've seen on multi-core CPU vs single-core is during DAG file creation - I sometimes get 2 DAG file "threads" running at the same time, and the system doesn't seem to bog down as much.

 The Big Rig (triple AMD R9-290) is quite happy with it's Semperon 145 - though when I shift it over to something else after ETH gets unprofitable I'll probably swap one of my X240 dual-cores in it's place - planning to build a new file server and that 145 would be overkill for it.



 Might it be the g3240 is just too slow clocked, rather than being single-core? I don't know Intel low-end CPUs well enough to rememeber even appx specs on their G-series stuff.
 Semperon 145 is the same series as the X240 (Regor) except it's got one core disabled, I forget which clocks higher but might be the same - 2,8 Ghz comes to mind.

Aren't the G series dual core? Dual core has been around forever... Anyway, you can clock those things to 4.2ghz+, that's what they're good for.

4.2? 50% oc? i don't think so, and you need a good cooler for that not the stock intel one, also it might not work with a h81 pro btc

[Juhagic]

better we wait the Rx 480 maybe Rx 490 will come soon

It is better to mine now with the existing cards. When the RX 480 comes out, it will be expensive and difficulty is already high.

[QuintLeo]

If they'll clock to even 4Gh ballpark, they shouldn't be even close to CPU limiting the GPUs.

Problem appears to be something else.


 If we were talking Foldcoin, then I could easily see the issue being CPU limiting, there's a lot more interaction between the CPU and any GPU(s) there.
 Ethereum though pretty much only uses the CPU for DAG file genration (and not always then depending on the miner software), and there is only a lot of data transfer TO the GPU when loading a DAG file.



 AMD hasn't even announced an RX 490 yet - it won't be soon, though in THEORY it could show up late this year.


 

[Amph]

no it's that thing i'm sure, it's the cpu limit thing, a g1840 can not be overclocked, it's locked to 2.8, you need at least 3.2 or more to not be limited

i need to buy the g3528 which is unlocked and can be overclocked to 4G easily

[antantti]

Used nano's start rolling to market at 300-325€ range, not $200 but still worth mentioning.

[FruitBucket]

Thing have changed a lot in the last three days. There is a possibiilty that the Ethereum price will drop further and mining is not profitable.

[Psynthax]

Wait for RX 480 it is only few weeks away.. or go with 280X if you cant wait..

[FruitBucket]

Wait for RX 480 it is only few weeks away.. or go with 280X if you cant wait..

The problem with 280x is that the hash rate drops steadily in every DAG change. It is much lower than before.

[Psynthax]

Doesnt every GPU suffer from DAG change?

[U253]

will 8G vRAM make any difference from 4G for the ethereum mining? I have planned to get 2X480 to start, noob about this.

[QuintLeo]

Ethereum is unlikely to maintain PoW (mining) much IF ANY past where a 3 GB card can no longer mine it.

[Dobmaster]

will 8G vRAM make any difference from 4G for the ethereum mining? I have planned to get 2X480 to start, noob about this.

If the ethereum PoW finishes within a year as planned, a 4GB card will be more than enough to mine it.

[FruitBucket]

will 8G vRAM make any difference from 4G for the ethereum mining? I have planned to get 2X480 to start, noob about this.

If the ethereum PoW finishes within a year as planned, a 4GB card will be more than enough to mine it.

I think it is better to buy the 4GB cards. It will consumes less energy as it has only 4GB memory compared to 8GB.

[Raja_MBZ]

will 8G vRAM make any difference from 4G for the ethereum mining? I have planned to get 2X480 to start, noob about this.

If the ethereum PoW finishes within a year as planned, a 4GB card will be more than enough to mine it.

I think it is better to buy the 4GB cards. It will consumes less energy as it has only 4GB memory compared to 8GB.

Exactly... that's what I've judged too. The hash rate is not much different of same model graphic card with different memories.

[Juhagic]

will 8G vRAM make any difference from 4G for the ethereum mining? I have planned to get 2X480 to start, noob about this.

If the ethereum PoW finishes within a year as planned, a 4GB card will be more than enough to mine it.

I think it is better to buy the 4GB cards. It will consumes less energy as it has only 4GB memory compared to 8GB.

Exactly... that's what I've judged too. The hash rate is not much different of same model graphic card with different memories.

For the 4GB card, it should be good to mine the Ethereum for 4 more years if the Ethereum does not change to PoS.