Sapphire Pulse RX 580 8Gb hashrate

td1912td1912 Member Posts: 1
I built a new rig started with 2 brand new Sapphire Pulse (hashrate calculated at 25.97MH/s each card). Then I went and bought 3 same brand new sapphire Pulse and add them to my rig. But with the 3 new cards, the hashrate drops down to 21.75 MS/s each.
Does anyone know the cause of this.
Thanks a lot

Comments

  • SublimeMudTimeSublimeMudTime Member Posts: 2
    can you lay out more details? OS, drivers, radeon set in graphics mode or compute?
    What does GPU-z report for stats as you mine?
  • SkirganaitorSkirganaitor Member Posts: 17
    What psu are you using, could the cards not be getting enough power?
  • xpointxpoint Member Posts: 18
    edited February 9
    25.97 is to small hash, if hashrate drops change bios mod settings( straps, mem )
  • asusrigasusrig Member Posts: 129
    td1912 said:

    I built a new rig started with 2 brand new Sapphire Pulse (hashrate calculated at 25.97MH/s each card). Then I went and bought 3 same brand new sapphire Pulse and add them to my rig. But with the 3 new cards, the hashrate drops down to 21.75 MS/s each.
    Does anyone know the cause of this.
    Thanks a lot

    Your cards are not set to compute mode in the driver. If you installed the latest AMD driver you have to manually set each card to compute mode. Or you can save yourself a lot of time and download the Beta Blockchain driver. With the Beta driver you don't have to set each card to compute mode.
  • maxshah912maxshah912 Member Posts: 15
    asusrig said:

    td1912 said:

    I built a new rig started with 2 brand new Sapphire Pulse (hashrate calculated at 25.97MH/s each card). Then I went and bought 3 same brand new sapphire Pulse and add them to my rig. But with the 3 new cards, the hashrate drops down to 21.75 MS/s each.
    Does anyone know the cause of this.
    Thanks a lot

    Your cards are not set to compute mode in the driver. If you installed the latest AMD driver you have to manually set each card to compute mode. Or you can save yourself a lot of time and download the Beta Blockchain driver. With the Beta driver you don't have to set each card to compute mode.


    Just question I know probably it won’t but blockchain. Beta driver let you use more then 8 GPu on windows ?
  • Ericjh801Ericjh801 Utah, USAMember Posts: 365 ✭✭
    edited February 14
    Nope. Need the newer drivers for More than 8 GPU. New drivers work great btw, just have to switch to compute mode.
  • zhaochengwuzhaochengwu Member Posts: 2
    Did you mod your cards' bios?
  • Jhon_Dove2409Jhon_Dove2409 Member Posts: 27
    edited July 8
    Hashrate 31.2 MHash/s
    Algorithm Ethereum
    Manufacturer Sapphire
    Power Consumption 140
    Core Clock 1200 MHz
    Memory Clock -
    OS Windows 10
    Driver Version 17.5.1


    The Sapphire RX 580 Nitro+ 8GB provides hashrate of 31.2 MHash/s for Ethereum at Coreclock 1200 MHz while consuming 140 watts.


    Gpu Specs

    The AMD RX 580 Nitro+ 8GB is a graphics card by AMD. It comes with GDDR5 memory and has 256 bit memory interface or bus width.

    Inside RX 580 Nitro+ 8GB there is an Polaris 20 graphics processor chip which has 2304 shaders. The base operating core clock speed of RX 580 Nitro+ 8GB is 1257 MHz and memory clock speed is 2000 MHz.

    For rendering purpose it comes with 32 render output unit's and 144 texture mapping unit's.

    https://miningchamp.com/gpus/91/Sapphire-RX-580-Nitro+-8GB-hashrate
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