8 × NVIDIA CMP-50HX GPU Mining Rig | Pearl & Quantus Config Options | Warranty

Eight dedicated mining GPUs. One serviceable machine. Real technical support.

The MikePC CMP 50HX rig brings eight NVIDIA CMP 50HX mining cards together on an eight-slot direct-slot mining chassis. It is supplied as a complete system, can be configured for supported GPU coins such as Pearl and Quantus, and comes with a 12-month seller hardware warranty. Installation, mining software deployment, pool setup and efficiency tuning are available as separately quoted services.

Unlike a single-algorithm ASIC, a GPU rig can be reconfigured as networks and software change. That flexibility is the main reason to choose this platform. It is not a promise of income.

Key features

• 8 × NVIDIA CMP 50HX, 10GB each. That is 80GB of VRAM in total across eight separate cards. It is not one shared 80GB GPU.
• Direct-slot chassis. Cards sit directly in the mining board, so there is no tangle of eight riser kits to fail. Each card can be reached, tested and replaced individually.
• Configurable coin profiles. Pearl and Quantus profiles are offered, subject to network, driver and miner compatibility checks at delivery.
• Efficiency-minded tuning. We tune for sustainable net performance after electricity, not just the highest number on screen.
• 12-month seller hardware warranty from delivery, in addition to your rights under Australian Consumer Law.
• Human support. Optional remote or on-site help, scoped and agreed in writing before any work begins.

Full description

GPU mining rewards the right hardware matched to the right electricity price. This rig is built for buyers who want a lower-cost, dedicated mining platform they can maintain themselves, or have us set up and tune for them.

The system is based on an eight-slot B75/B85-class mining motherboard with a matching CPU, 8GB of RAM and a 512GB SS, an appropriately rated continuous-duty power supply arrangement, chassis cooling fans and eight NVIDIA CMP 50HX cards. CMP cards are purpose-built mining hardware. They are not gaming cards and are not suitable as a general AI workstation.

Because the rig runs a mining-oriented Linux operating system over wired Ethernet, it is built to be left running and managed remotely once configured. We document the exact parts, serial numbers, software versions and test results for the machine you order, so you know precisely what you own.

Specifications

Card power note: The MSI CMP 50HX specification is 225W per card with dual 8-pin power connectors, and other board versions can differ. Eight cards at that rating add up to 1,800W for the GPUs alone, before the motherboard, CPU, fans and PSU losses. Lowering the software power limit reduces draw, but it is not a substitute for correctly sized PSUs and circuits.

Which coins can it mine?

Pearl and Quantus are different workloads. The same card needs a coin-specific driver, miner and validation for each, so they are alternative operating profiles. The rig does not earn full output from both at the same time.

• Pearl: a compute-oriented mining design. Important: the Pearl protocol proposal we reviewed (PIP-3) was still a draft and suggests newer GPU classes that do not list the CMP 50HX. We reconfirm Pearl support before every sale. A protocol change may require switching to another supported coin, with no guarantee of similar income.
• Quantus: uses QPoW with Poseidon2 hashing. Before you rely on it, we verify the target network, miner, pool and a successful small withdrawal.

Coin support is conditional on the network, driver and miner version validated at delivery. Protocol changes can remove support.

How the rig is set up

This is the process we follow, and what you should expect at each stage.

Stage 1: Hardware build and inspection

1. Record the exact bill of materials and serial numbers of the board, CPU, RAM, SSD, PSUs and all eight GPUs.
2. Inspect cosmetic and repair condition of every part.
3. Seat the eight CMP 50HX cards in the direct-slot board and connect the dual 8-pin power cables to each card. Cables are checked for correct PSU rails and secure connectors.
4. Fit the CPU cooler, RAM, SSD and chassis fans, and tidy cabling so airflow is not obstructed.

Stage 2: Operating system and drivers

1. Install the mining OS (Linux-based) on the SSD.
2. Install the correct NVIDIA driver and confirm all eight cards are detected.
3. Update the BIOS settings the board needs for multi-GPU operation, including the PCIe configuration for eight cards.
4. Set the system to start automatically and recover after a power loss.

Stage 3: Miner and coin profile

1. Install the miner for the chosen coin (Pearl or Quantus), at a version validated for that network.
2. Create the worker configuration and connect it to the pool endpoint or node.
3. Your wallet and payout address are customer-controlled. We never need your seed phrase or private keys. Payout addresses are never changed without your authorisation.
4. Confirm accepted shares and a successful small payout or withdrawal before the profile is called ready.

Stage 4: Burn-in and tuning

1. Run a stability test of up to 72 hours, watching temperatures, fan speeds, rejected shares and crashes.
2. Measure wall power draw and compare accepted hashrate against power for each profile.
3. Adjust power limits, core and memory settings and fan curves to find a stable, efficient operating point.
4. Record final software versions, settings and measured results in your handover sheet.

Stage 5: Delivery and installation at your site

1. The rig is packed and delivered. Freight and insurance are quoted separately.
2. At your site you need a suitable location, power and wired internet. Optional on-site installation covers placement, network setup and commissioning. Travel and licensed electrical work are separate.
3. After power-on, remote monitoring and approved updates can be set up if you want them.

Power, electrical and site requirements

• This is not a standard desk-PC load. With eight cards under mining load, continuous draw is far higher than a normal computer and can exceed what an ordinary household circuit is meant to carry all day.
• Have a licensed electrician assess the supply, circuit, plugs and connectors before the rig is switched on. Fixed wiring work must be done by a licensed electrician.
• Provide a dry, ventilated space with room for hot exhaust air to leave. Mining heat does not disappear, so a closed cupboard is unsuitable.
• Use wired Ethernet for reliable operation.
• Consider noise. Eight cards and fans are audible. Where the rig will run near living areas, ask for a site assessment. We can recommend placement, ducting and fan options, but we do not quote a fixed decibel figure before testing, and lower-noise settings may reduce hashrate.
• Running costs: work out your electricity cost per day at your tariff before buying. We can help with a separate profitability assessment based on your actual quote.

What is included, and what is separate

The written quote states exactly what is included. Anything not listed is not included.

Warranty

A 12-month seller hardware warranty applies from delivery and is in addition to your rights under the Australian Consumer Law, which are not excluded. It covers hardware faults on the components listed in your warranty document. It is separate from paid installation and tuning services, and you do not need to buy a support plan to make a valid claim.

The warranty is not an earnings guarantee and does not promise lifelong coin compatibility. Please contact MIKE PC AU Sales & Inquiry for more Info.

Frequently asked questions

Is mining income guaranteed? No. Coin prices, rewards, network difficulty, uptime and protocol changes all affect results, and a rig can earn less than its running cost.

Is this 80GB of GPU memory? It is 80GB in total, made of eight separate 10GB cards. It does not behave as a single 80GB GPU.

Can I use it for gaming or AI? No. CMP cards are mining hardware and are not designed for gaming, graphics or general AI workloads.

Can I run it at home? Yes but only if your electrical supply, ventilation, heat and noise conditions suit it.

Do you need my wallet seed phrase? Never. Keep your seed phrase and private keys private. Remote access is only used with your approval and can be revoked.

Is setup included? Only if it is listed on your quote. Setup and tuning are optional paid services.

What if a coin stops being supported? We can review other supported coin profiles for the hardware. We cannot guarantee comparable income.

Can I order fewer cards? Custom 4-card and 6-card builds can be quoted. These are build-to-order options, not confirmed stock.

Call to action

Build My GPU Mining Quote. Send us your electricity rate, install location, available power supply and preferred coin. We will confirm condition, parts, price, freight and services in writing before you buy.

Required notice

Mining income is not guaranteed. Results depend on electricity cost, coin price, network difficulty, uptime and protocol changes. Coin compatibility is checked at delivery and may change. Specifications are references, and photographs are for illustration only unless they show the actual unit. Any payback or earnings figure must be shown with its date, assumptions and risks, and recalculated for your actual purchase price.

Return on investment: historical model and calculations

Status: historical illustration only. The earnings inputs come from the 17/10/2026 investor model. The payback periods below are recalculated for a A$4,999 machine price. They are not a measured result from this rig, not a current quote and not a promise. Always show the date, capital basis and assumptions next to any payback figure.

Model inputs

• Capital basis: A$4,999, the customer’s purchase price for the machine. Freight, installation, electrical work, cooling and taxes are not included.
• Includes a 30-day procurement and deployment delay.
• Assumes 95% routine uptime, a 5% income deduction for combined fees, a 10% annual per-card fault probability, repair delays and a replacement-card budget. These assumptions come from the old model, which was built on a $4999 capital base.
• Coin prices, unit output and exchange rates are frozen. Income tax, import taxes, premises, labour, extra cooling and electrical upgrades are excluded.
• Historical per-card reference outputs: Pearl 82 TH/s (656 TH/s for eight cards); Quantus 283 MH/s at 167W GPU-reported (2.264 GH/s and 1,336W GPU subtotal for eight cards). These were not reproduced under equivalent conditions and are not performance commitments.

Payback by electricity rate (A$4,999 capital)

The A$0.20/kWh row uses the report’s stated daily cash flow. The A$0.10 and A$0.30 rows work backwards from the old paybacks, because the report gives no daily cash flow at those rates, so treat them as approximations (about ±0.1 month).

Downside scenario: the report’s 35.65-month result (switching coin at month 3 and receiving half the alternative coin’s output) was calculated on the old A$3,650.09 capital. It can’t be rescaled to A$4,999 without re-running the day-by-day model, so don’t quote it at this price. It would be longer.

How to recalculate for the customer’s actual price

Static payback days = commissioning delay (30 days) + (customer’s total upfront outlay ÷ daily net cash flow), with the division rounded up. Months = days ÷ (365.25 ÷ 12). Daily net cash flow must deduct power, pool, miner and exchange fees, downtime and a maintenance allowance. If daily net cash flow is zero or negative, there is no finite payback.

Historical daily net cash flow at A$0.20/kWh: Pearl A$16.53/day, Quantus A$13.59/day.

Worked examples (A$4,999):

• Pearl: 4,999 ÷ 16.53 = 302.4, rounded up to 303 days. Add 30 days for 333 days, then 333 ÷ 30.4375 = about 10.94 months.
• Quantus: 4,999 ÷ 13.59 = 367.8, rounded up to 368 days. Add 30 days for 398 days, then 398 ÷ 30.4375 = about 13.08 months.

These are approximations from rounded daily figures, not suggested retail prices or market forecasts. The original repair allowance was not removed because of the 12-month warranty.

At A$4,999 the Pearl case at A$0.10 and A$0.20/kWh comes in under 12 months, but Quantus at A$0.20/kWh does not. Even so, don’t use “pays for itself within a year” as a blanket claim, because it depends on the rate, the coin and the model’s frozen assumptions