FPGA (field-programmable gate array) is one of the most interesting and complex devices for mining. Unlike ASICs, FPGA can be flexibly configured for different mining algorithms. The power of FPGA will be lower than that of ASIC, but higher than a graphics card.

Osprey is producing energy efficient programmable FPGA units for KASPA, IRON, KCN mining. Kryptex PPS+ Pool is the best pool that has tested and supports new FPGA models Osprey E300-VU35P, E300-VU33P, E100-VU35P.

Important note! The main difference between FPGA and ASICs is that they can be customised for different algorithms. One FPGA model can be used for mining several different algorithms. Most often, ASICs are limited to only one algorithm. Developers of FPGA miners charge an extra fee for using the product (up to 10%).

Osprey FPGA — Specifications and Size

Model	Algorithm	Coin	Hashrate	Consumption	Dimensions (cm)	Weight
E300-VU35P	kHeavyHash, Blake3-ironfish	KASPA, IRON	KASPA — 16,7 Gh/s IRON — 223 Gh/s	700 Watt (±10%)	33 x 12,7 x 15,2	5 kg
E300-VU33P	kHeavyHash, Blake3-ironfish	KASPA, IRON	KASPA — 9,9 Gh/s IRON — 112 Gh/s	500 Watt (±10%)	33 x 12,7 x 15,2	5 kg
E100-VU35P	kHeavyHash, Blake3-ironfish	KASPA, IRON	KASPA — 4,6 Gh/s IRON — 74 Gh/s	175 Watt (±10%)	33 x 12,7 x 15,2	3 kg

FPGA Osprey E300, E100 Hashrate

Osprey FPGA hashrate can vary depending on the overclock, algorithm, and model.

Osprey E100-VU35P can make 74 Gh/s on Blake3-ironfish (IRON) algorithm, which is equal to the hashrate of 4 graphics cards Nvidia RTX 3080, consuming 4 times less — only 150 watts versus 600 watts.

E300-VU35P is the most powerful FPGA for mining from Osprey. E300-VU35P can make 223 Gh/s, which is equal to hashrate of 13 graphics cards Nvidia RTX 3080, consuming 2,5 times less — only 720 watts versus 1,95 kWt.

What to Mine on Osprey FPGA?

FPGA Osprey E300-VU35P, E300-VU33P, E100-VU35P currently support mining on kHeavyHash (KASPA), Blake3-ironfish (IRON), SHA3d (KCN) algorithms.

Developers announce plans to add support for Autolykos (ERG) and SHA512256d (RXD) mining algorithms in the near future.

Osprey E300, E100 Profitability

Currently, the profitability of Osprey FPGA varies from $0,9/day to $2,8/day, depending on the model, and excluding electricity costs.

We recommend to check the actual profitability in our mining calculator, where you can also calculate the profitability including your electricity costs.

Model	Coin	Hashrate	Consumption	Profit w/o El. Price
E300-VU35P	KASPA, IRON	KASPA — 16,7 Gh/s IRON — 223 Gh/s	700 Watt (±10%)	~2,8$ / day
E300-VU33P	KASPA, IRON	KASPA — 9,9 Gh/s IRON — 112 Gh/s	500 Watt (±10%)	~1,4$ / day
E100-VU35P	KASPA, IRON	KASPA — 4,6 Gh/s IRON — 74 Gh/s	175 Watt (±10%)	~0,9$ / day

Check the profitability of Osprey FPGA on the mining calculator.

Osprey FPGA Settings

Go to “Miner” tab to setup your FPGA.

Coin	Pool	Wallet	WorkerID
KASPA	kas.kryptex.network:7777 or stratum+tcp://kas.kryptex.network:7777	KASPA_WALLET_ADDRESS	WORKER_NAME
IRON FISH	iron.kryptex.network:7777 or stratum+tcp://iron.kryptex.network:7777	IRON_WALLET_ADDRESS	WORKER_NAME

• Wallet is the wallet address filled in the format: 76c2bde53d3e3e80e6a8d100e5cdefd285d855d97a8bdfab3a5f962c1928b83ee3.
• WorkerID is the name of your FPGA, specified in Latin letters: IronFishE300.

Click "Start" to save your settings and start mining.

Monitor your FPGA work on the “Miner” → “Miner Logs” page. Here you will see your hashrate, statistics of accepted shares and all related information.

You can find the detailed instructions for a specific Osprey FPGA model on the developer's Github — https://github.com/PachiraMining/E300_development/blob/main/E300_Manual_Guide_V1.0.2.pdf

Overclocking Osprey E100, E300

Overclocking the FPGA can make it overheat and cause unstable operation. Overclocking above the recommended values is dangerous and can damage the device! Overclocking should be done wisely, carefully study all aspects and consult with advanced users!

The FPGA architecture allows you to flexibly adjust the core and memory frequency for different algorithms.

To overclock the Osprey FPGA:

1. Go to the "Miner" tab;
2. Click the "Stop" button to stop mining;
3. To overclock the core — fill in the cells "fpga0", "fpga1", "fpga2" in front of "FPGA core lock". Optimal values will be 400-900 MHz. The higher the frequency, the higher the hashrate and higher power consumption on core-dependent algorithms.
4. To overclock the memory — fill in the cells "fpga0", "fpga1", "fpga2" in front of "FPGA hbm clock". The optimal values will be 900-1250 MHz. Memory overclocking should be done only in case of mining on memory-dependent algorithms, in other cases it is useless. On core-dependent algorithms, use the default value of 1100 MHz.
   • For mining on kHeavyHash (KASPA) optimal values of "FPGA core clock" will be 700-750 MHz;
   • For mining on Blake3-ironfish (IRON) optimal values of "FPGA core clock" will be 800-830 MHz;
5. Apply the new overclock — click "Start".

The number of cells "fpga0", "fpga1", "fpga2" may be more or less, depending on the model of your FPGA (the example uses the Osprey E300-VU35P)

Osprey E100, E300 Firmware Update

If necessary, you can update or change the firmware yourself, for this:

1. Go to the manufacturer's Discord and download the required firmware.
2. Open the page for updating “Update firmware”, select the downloaded update.
3. Update and reboot your FPGA.

You can enable auto update of your FPGA — tick the "Enable auto update firmware" box.