During a recent conversation with a friend, we discussed a topic that led to the question posed in the title.

- XPM PrimeCoin - currently limited to CPU mining.
- QRK Quark - a clone of Sifcoin that also supports CPU mining only.
- SIC Sifcoin - limited to CPU mining.
- CL Copperlark - exclusively CPU mining.

- LTC Litecoin - second only to BTC in terms of widespread acceptance and market volume, faster than BTC, CPU-friendly but not GPU-friendly.

I would like to mention that even mining LTC on a CPU is not a profitable endeavor. As an experiment, I attempted mining on three powerful servers (Xeon X5570) simultaneously. After an hour, I managed to mine only 0.03 LTC.

Here's a counter question: are there any cryptocurrencies that can be easily calculated mentally? Imagine the convenience of going to a store, quickly calculating the price in your mind, and purchasing the items.

The value of a currency is influenced by the complexity of its calculations. It seems pointless to have a currency that can be easily calculated on a CPU, considering that calculations can be done even faster on a video card.

Additionally, it's worth mentioning that the computational power required for cryptocurrency mining has drastically increased over time. As a result, CPUs are no longer the primary choice for efficient mining, with GPUs and specialized hardware taking the lead.

ProtoShare (PTS) is another cryptocurrency that currently relies on CPU mining alone. However, due to the increasing difficulty, nearly 50% of the currency's reserves were mined within just one month of its introduction.

It's interesting to see how the demand for mining certain cryptocurrencies can rapidly increase, causing the difficulty level to escalate. This highlights the importance of staying updated with the latest trends and developments in the world of cryptocurrency mining.

there are several cryptocurrencies that can be mined exclusively on CPU. Some examples include Monero (XMR), Aeon (AEON), and TurtleCoin (TRTL). These cryptocurrencies are designed to be resistant to ASIC mining and favor CPU mining as a way to ensure decentralization and accessibility for all participants. However, it's important to note that CPU mining may not be as efficient as GPU or ASIC mining in terms of hash rate and energy consumption.

cryptocurrencies that can be mined exclusively on CPU:

1. VerusCoin (VRSC): VerusCoin is a privacy-focused cryptocurrency that supports both CPU and GPU mining. It utilizes a unique algorithm called VerusHash 2.0, which allows for fair and efficient mining on both CPU and GPU.

2. Loki (LOKI): Loki is a privacy-centric cryptocurrency that utilizes the RandomX algorithm, which is optimized for CPU mining. It aims to provide secure, private, and decentralized communication through the Loki Network.

3. Electroneum (ETN): Electroneum is a mobile-based cryptocurrency that can be mined on mobile devices or traditional computers. It uses its own cryptocurrency algorithm known as CryptoNight, which is well-suited for CPU mining.

4. Sumokoin (SUMO): Sumokoin is a privacy-oriented cryptocurrency that employs the CryptoNight algorithm for CPU mining. It provides untraceable transactions and enhanced privacy features.

additional cryptocurrencies that can be mined exclusively on CPU:

1. Bytecoin (BCN): Bytecoin is one of the oldest cryptocurrencies, and it utilizes the CryptoNight algorithm for mining. CPU mining is still possible for Bytecoin, but it's important to note that it may not be as profitable as other mining methods due to network difficulty and competition.

2. Graft (GRFT): Graft is a decentralized payment processing network that supports CPU mining. It uses the CryptoNight algorithm and aims to provide fast, secure, and private payment solutions.

3. Haven (XHV): Haven is a private and untraceable cryptocurrency that uses the RandomX algorithm, which is specifically designed for CPU mining. It integrates both the privacy features of Monero and stablecoin functionalities.

4. Masari (MSR): Masari is a privacy-focused cryptocurrency that employs the CryptoNight algorithm. While it's still possible to mine Masari using CPU, GPU mining is also an option.