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<li class="toctree-l1 current"><a class="current reference internal" href="#">System Requirements</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="#vm-or-physical-server">VM or physical server</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#cpu">CPU</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#memory">Memory</a></li>
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<section id="system-requirements">
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<h1>System Requirements<a class="headerlink" href="#system-requirements" title="Permalink to this heading"></a></h1>
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<section id="vm-or-physical-server">
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<h2>VM or physical server<a class="headerlink" href="#vm-or-physical-server" title="Permalink to this heading"></a></h2>
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<ul class="simple">
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<li><p>For VMs, NIC passthrough is required for optimal throughput and latency (XDP vs generic XDP). Using Virtio / bridging is much slower than NIC passthrough. Virtio / bridging should not be used for large amounts of traffic.</p></li>
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</ul>
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</section>
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<section id="cpu">
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<h2>CPU<a class="headerlink" href="#cpu" title="Permalink to this heading"></a></h2>
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<ul class="simple">
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<li><p>2 or more CPU cores</p></li>
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<li><p>A CPU with solid <a class="reference external" href="https://www.cpubenchmark.net/singleThread.html#server-thread">single-thread performance</a> within your budget. Queuing is very CPU-intensive, and requires high single-thread performance.</p></li>
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</ul>
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<p>Single-thread CPU performance will determine the max throughput of a single HTB (cpu core), and in turn, what max speed plan you can offer customers.</p>
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<table class="docutils align-default">
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<thead>
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<tr class="row-odd"><th class="head"><p>Customer Max Plan</p></th>
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<th class="head"><p>Passmark Single-Thread</p></th>
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</tr>
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</thead>
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<tbody>
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<tr class="row-even"><td><p>100 Mbps</p></td>
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<td><p>1000</p></td>
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</tr>
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<tr class="row-odd"><td><p>250 Mbps</p></td>
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<td><p>1500</p></td>
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</tr>
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<tr class="row-even"><td><p>500 Mbps</p></td>
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<td><p>2000</p></td>
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</tr>
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<tr class="row-odd"><td><p>1 Gbps</p></td>
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<td><p>2500</p></td>
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</tr>
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<tr class="row-even"><td><p>2 Gbps</p></td>
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<td><p>3000</p></td>
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</tr>
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</tbody>
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</table>
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<p>Below is a table of approximate aggregate throughput capacity, assuming a a CPU with a <a class="reference external" href="https://www.cpubenchmark.net/singleThread.html#server-thread">single thread</a> performance of 2700 or greater:</p>
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<table class="docutils align-default">
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<thead>
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<tr class="row-odd"><th class="head"><p>Aggregate Throughput</p></th>
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<th class="head"><p>CPU Cores</p></th>
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</tr>
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</thead>
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<tbody>
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<tr class="row-even"><td><p>500 Mbps</p></td>
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<td><p>2</p></td>
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</tr>
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<tr class="row-odd"><td><p>1 Gbps</p></td>
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<td><p>4</p></td>
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</tr>
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<tr class="row-even"><td><p>5 Gbps</p></td>
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<td><p>6</p></td>
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</tr>
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<tr class="row-odd"><td><p>10 Gbps</p></td>
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<td><p>8</p></td>
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</tr>
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<tr class="row-even"><td><p>20 Gbps</p></td>
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<td><p>16</p></td>
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</tr>
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<tr class="row-odd"><td><p>50 Gbps*</p></td>
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<td><p>32</p></td>
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</tr>
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</tbody>
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</table>
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<p>(* Estimated)</p>
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<p>So for example, an ISP delivering 1Gbps service plans with 10Gbps aggregate throughput would choose a CPU with a 2500+ single-thread score and 8 cores, such as the Intel Xeon E-2388G @ 3.20GHz.</p>
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</section>
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<section id="memory">
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<h2>Memory<a class="headerlink" href="#memory" title="Permalink to this heading"></a></h2>
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<ul class="simple">
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<li><p>Minimum RAM = 2 + (0.002 x Subscriber Count) GB</p></li>
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<li><p>Recommended RAM:</p></li>
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</ul>
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<table class="docutils align-default">
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<thead>
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<tr class="row-odd"><th class="head"><p>Subscribers</p></th>
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<th class="head"><p>RAM</p></th>
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</tr>
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</thead>
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<tbody>
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<tr class="row-even"><td><p>100</p></td>
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<td><p>4 GB</p></td>
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</tr>
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<tr class="row-odd"><td><p>1,000</p></td>
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<td><p>8 GB</p></td>
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</tr>
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<tr class="row-even"><td><p>5,000</p></td>
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<td><p>16 GB</p></td>
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</tr>
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<tr class="row-odd"><td><p>10,000*</p></td>
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<td><p>18 GB</p></td>
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</tr>
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<tr class="row-even"><td><p>50,000*</p></td>
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<td><p>24 GB</p></td>
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</tr>
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</tbody>
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</table>
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<p>(* Estimated)</p>
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</section>
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<section id="server-recommendations">
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<h2>Server Recommendations<a class="headerlink" href="#server-recommendations" title="Permalink to this heading"></a></h2>
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<p>It is most cost-effective to buy a used server with specifications matching your unique requirements, as laid out in the System Requirements section below.
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For those who do not have the time to do that, here are some off-the-shelf options to consider:</p>
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<ul class="simple">
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<li><p>1 Gbps | <a class="reference external" href="https://www.thinkmate.com/system/superserver-e100-9w-l">Supermicro SuperServer E100-9W-L</a></p></li>
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<li><p>10 Gbps | <a class="reference external" href="https://www.thinkmate.com/system/superserver-510t-ml">Supermicro SuperServer 510T-ML (Choose E-2388G)</a></p></li>
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<li><p>20 Gbps | <a class="reference external" href="https://www.dell.com/en-us/shop/servers-storage-and-networking/poweredge-r450-rack-server/spd/poweredge-r450/pe_r450_15127_vi_vp?configurationid=a7663c54-6e4a-4c96-9a21-bc5a69d637ba">Dell R450 Config</a></p></li>
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</ul>
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<p>The <a class="reference external" href="https://www.thinkmate.com/system/asrock-1u4lw-b6502l2t/635744">AsRock 1U4LW-B6502L2T</a> can be a great lower-cost option as well.</p>
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