{"product_id":"mellanox-connectx-3-en-network-adapter-mcx312a-xcbt-low-latency","title":"Mellanox ConnectX-3 EN Network Adapter MCX312A-XCBT - Low Latency","description":"\u003cp\u003eIn this review the Mellanox ConnectX-3 EN Network Adapter is evaluated as a focused option for servers and storage systems that need predictable, high-bandwidth Ethernet with low latency. The review finds the card most compelling for virtualization hosts, clustered databases and high-performance computing where reduced CPU overhead and RDMA over Ethernet matter. Its combination of \u003cstrong\u003elow latency RDMA\u003c\/strong\u003e, dual Gigabit Ethernet ports and PCIe 3.0 makes it a practical upgrade for data center blades and LOM designs where throughput and CPU offload are priorities.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eIndustry-leading throughput:\u003c\/strong\u003e Delivers higher available bandwidth to improve application responsiveness for clustered databases and web infrastructure.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLow latency RDMA over Ethernet:\u003c\/strong\u003e Reduces transport latency for real-time workloads and high frequency trading, improving transaction speeds.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eI\/O consolidation:\u003c\/strong\u003e Offloads network processing to free CPU cycles, which is especially valuable in virtualized server environments.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVirtualization acceleration:\u003c\/strong\u003e Provides features that boost performance for many virtual machines on a single host, enabling more users per server.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTCP\/UDP\/IP and iSCSI stacks:\u003c\/strong\u003e Built-in protocol support simplifies deployment for storage and general networking without added software layers.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePCI Express 3.0 and dual ports:\u003c\/strong\u003e Utilizes PCIe 3.0 bandwidth and dual Gigabit Ethernet ports for resilient, high-throughput connections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe ConnectX-3 EN is aimed at IT teams running performance-driven server and storage applications in enterprise data centers, HPC clusters and virtualized hosts that need predictable low latency and CPU offload. It suits blade servers, LAN on Motherboard designs and any environment where increasing users per server and improving access times matters.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for casual desktop upgrades or small SOHO networks where the advanced offload features and RDMA capabilities are unnecessary. Small offices that only need basic Ethernet connectivity should consider simpler, lower-cost network cards instead.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eHigh throughput and \u003cstrong\u003eindustry-leading performance\u003c\/strong\u003e that benefits clustered and latency-sensitive applications.\u003c\/li\u003e\n \u003cli\u003eOffloads network processing to reduce CPU load, improving VM density in virtualized environments.\u003c\/li\u003e\n \u003cli\u003eSupports RDMA over Ethernet and data center bridging for modern storage and HPC use cases.\u003c\/li\u003e\n \u003cli\u003eDual Gigabit Ethernet ports with PCIe 3.0 provide redundancy and sufficient bus bandwidth.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eDesigned for server and data center use, so features may be overkill for basic desktop or small office needs.\u003c\/li\u003e\n \u003cli\u003eAdvanced features require compatible drivers and host configuration to realize full benefits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eConnectX-3 EN Network Adapter MCX312A-XCBT\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eMellanox\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003ePCI Express 3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePorts\u003c\/td\u003e\n\u003ctd\u003eDual Gigabit Ethernet ports\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eKey protocols\u003c\/td\u003e\n\u003ctd\u003eTCP\/UDP\/IP, iSCSI, RDMA over Ethernet\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePrimary benefits\u003c\/td\u003e\n\u003ctd\u003eLow latency, I\/O consolidation, virtualization acceleration\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTarget use\u003c\/td\u003e\n\u003ctd\u003eData center, HPC, virtualized servers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Mellanox ConnectX-3 EN is a strong choice for data center and HPC teams that need \u003cstrong\u003elow latency Ethernet\u003c\/strong\u003e with CPU offload and virtualization acceleration. It offers tangible value for clustered databases and virtualized hosts where throughput and response time matter, but organizations with only basic network needs should opt for a simpler NIC to save cost.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this card support RDMA?\u003c\/strong\u003e\u003cbr\u003eYes, the ConnectX-3 EN supports RDMA over Ethernet to lower latency for compatible workloads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it suitable for virtualized servers?\u003c\/strong\u003e\u003cbr\u003eYes, it includes virtualization acceleration and I\/O consolidation features designed to improve VM density and reduce CPU overhead.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat interface does it use?\u003c\/strong\u003e\u003cbr\u003eThe adapter uses a PCI Express 3.0 interface and provides dual Gigabit Ethernet ports for network connectivity.\u003c\/p\u003e","brand":"Mellanox","offers":[{"title":"Default Title","offer_id":48175184937179,"sku":"B00EONDWP4","price":163.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81ki-Wk_UxL._AC_SL1500.jpg?v=1769569240","url":"https:\/\/gearmusthave.com\/products\/mellanox-connectx-3-en-network-adapter-mcx312a-xcbt-low-latency","provider":"GearMustHave","version":"1.0","type":"link"}