DDR3 RAM in Focus
Following our DDR2 RAM feature, we continue tracing the development of RAM with DDR3 RAM. When was this standard introduced? Which well-known server systems used (and still use) DDR3 RAM? And are these models still in operation today? All this and more in our latest blog post.
Technical Specifications and Information
Introduction and Usage Period
- Market launch: around 2007 for PCs, from 2008 also in the server sector
- Usage period: approx. 2008–2017 and in some specialized systems even today
Technical Characteristics
- Standard: DDR3 SDRAM
- Clock speeds: 800 MHz to 1,866 MHz (effective: DDR3-1866)
- CAS latencies: typically CL6 to CL13, depending on the clock rate
- Data rates: 6.4 GB/s (DDR3-800) to 14.9 GB/s (DDR3-1866)
- Voltage: 1.5 V (lower than DDR2 with 1.8 V) or 1.35 V (DDR3L – Low Voltage)
- Capacities in the server sector: between 1 GB and 32 GB per module
- Types (form factors/variants): DDR3 ECC UDIMM (Unbuffered DDR3 DIMM with error correction for smaller servers and workstations), DDR3 RDIMM (Registered DDR3 DIMM / standard model in many server systems), DDR3 LRDIMM (Load-Reduced DDR3 DIMM / for high-capacity servers), DDR3 VLP DIMM (DDR3 Very Low Profile / for specific blade servers)
- Ranks: Single Rank, Dual Rank, Quad Rank
- Form factor: 240-pin DIMM (Note: DDR3 modules are not backward or forward compatible with DDR2 or DDR4 – the notches in the module prevent incorrect installation)
Special Features of the DDR3 Generation
- DDR3 combines scalability and energy efficiency – a key advantage for growing data centers
- Dual-socket servers could be upgraded for the first time to up to 1.5 TB of RAM (up to 768 GB RAM per CPU socket with LRDIMMs)
- Improved bandwidth through 8-bit prefetch architecture
- Compared to DDR2, DDR3 offers double the bandwidth and transfer rates – while consuming significantly less energy
- Stable performance and high memory density – ideal for virtualization, databases, and cloud workloads
DDR3 vs. DDR2 – Advantages of DDR3 over its Predecessor DDR2
The DDR3 technology marked a small turning point – a significant milestone in the development of modern hardware. The advantages over DDR2 modules are clear: DDR3 offers higher bandwidth while operating at a lower voltage, more capacity per module, and significantly improved energy efficiency – especially thanks to the use of DDR3 LRDIMMs. Crucial for large data centers: while DDR2 FB-DIMMs generated considerable heat, DDR3 modules produce much less heat – with comparable performance. Additionally, optimized register technology resulted in improved signal quality.
Compatible Servers & Areas of Application
These servers, for example, supported processor families such as the Intel XEON 5500 and 5600 series (e.g., XEON X5650 or E5530), the E5-2600 v1 and v2 series (e.g., XEON E5-2690v2 or XEON E5-2660), the E7 series for 4-way servers (e.g., XEON E7-8880v2 or E7-8890v2), as well as the AMD Opteron 6000 series. Compatible sockets for many of these CPUs include FC LGA1366, LGA2011, and LGA1567. Popular motherboards supporting the DDR3 standard include the Intel server motherboard S5520HC, the Supermicro X9 series, and the Tyan S7000 series.
With the emergence of the DDR3 standard in the server sector, these – at the time – cutting-edge machines were used for virtualization (e.g., VMware, Hyper-V), as database servers, web, mail, file, and print servers, as well as backup servers and cloud systems.
Market Status & Availability
The DDR3 standard has been officially considered End of Life since around 2018 and has been technically surpassed by DDR4 and DDR5. Nevertheless, many companies – for various reasons – continue to rely on servers with DDR3 RAM. Especially small businesses just beginning to embrace digitalization, start-ups, or public institutions that have planned their IT infrastructure for long-term use often operate their systems until the end of their lifecycle – primarily for cost reasons. The same applies to universities or research institutions that have established these systems for testing and research purposes or use them to support long-running projects. For certain intranet systems, the DDR3 standard is still sufficient.
Servers used for training and educational purposes also often rely on DDR3 systems, as they can provide sufficient RAM for virtual machines in many cases while being significantly more affordable. In some cases, older servers are necessary to ensure software compatibility – industrial companies with specialized machine control systems often continue to use such internal systems long after the official End of Life phase, as do software development firms.
This also applies when robustness is more important than performance: in edge or embedded systems, the DDR3 standard is still in use. Moreover, the supply of spare parts for these older models remains strong: the used and refurbished market offers high-quality components at low prices. If you’re looking for such servers or components, we recommend checking out our budget server category.
We have more interesting articles on server RAM and other important server components for you here:
