Buy System x3500 M4
Featured Models

High performance two-socket tower server for your business critical demands

The IBM System x3500 M4 is an all-in-one business solution in a flexible, high-performance, dual-socket tower server designed to meet the flexibility and scalability needs of your growing business. The System x3500 M4 tower is ideal for fast growing small businesses, medium-to-large corporations, and remote offices that require flexibility, high availability and reliability, system management and energy efficiency.

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IBM System x3500 M4 delivers the scalability, high performance and optimized efficiency for your business critical applications. To buy IBM featured models, please select Essential server, Enhanced server, or Elite server pre-configured bundles, or select the "customize" links below to buy direct from IBM. To buy IBM Servers built just for you, please select Build Your Own, or click on the "Build Your Own" link above to configure your new x3500 M4 server from IBM.

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Availability:** "B" – Standard availability; up to 12 business days order to ship "B" – Standard availability; up to 12 business days order to ship "B" – Standard availability; up to 12 business days order to ship
Base Chassis
(feature code):
Tower Base (A1F8) Tower Base (A1F8) Tower Base (A1F8)
Power Supply (Std/Max): 900W High Efficiency Platinum PSU 1/2 900W High Efficiency Platinum PSU 1/2 900W High Efficiency Platinum PSU 1/2
Intel® Xeon™ Processor E5-2603 v2 4C / 1.8GHz Intel® Xeon™ Processor E5-2640 v2 8C / 2.0GHz Intel® Xeon™ Processor E5-2680 v2 10C / 2.8GHz
Processors (Std/Max): 1/2 2/2 2/2
32GB/384GB 64GB/768GB 128GB/768GB
Memory (Slots/Type): 12 DIMM Slots / DDR3 RDIMM 24 DIMM Slots / DDR3 RDIMM 24 DIMM Slots / DDR3 RDIMM
Hard Drive (Std/Max)[4]: 0 / 24TB 2TB / 24TB 4TB / 24TB
Optical Drive: Half-High SATA DVD-ROM Half-High SATA DVD-ROM Half-High SATA DVD-ROM
Form Factor: 5U Tower 5U Tower 5U Tower
Slots x Bays
Total (Avail):
6(5) x 10(9) 6(5) x 10(9) 6(5) x 10(9)
Operating System: No Operating System Microsoft® Windows Storage Server® 2012 Std Microsoft® Windows Storage Server® 2012 Std
Maintenance and Warranty[7]: 3 Year Onsite Repair 24x7 4 Hour Response 3 Year Onsite Repair 24x7 4 Hour Response 3 Year Onsite Repair 24x7 4 Hour Response
Remote Technical Support: RTS for Base 3 Year RTS for Base 3 Year RTS for Base 3 Year

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Lenovo acquires IBM x86 systems

These IBM x86 products are now products of Lenovo in the U.S. and other countries. IBM will host x86-related content on until migrated to Lenovo. During the transition, please interpret references to IBM in relation to transitioned products as Lenovo.

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Build Your Own x3500 M4 Tower

Tower Server x3500 M4

Build your own x3500 M4 direct from IBM, and customize this high-performance dual-socket tower.

Buy x3300 M4 Featured Models

Tower Server x3300 M4

Featured Models are pre-configured by IBM, and can be configured to meet your business needs.

Build Your Own x3300 M4 Tower

Tower Server x3300 M4

Build your own x3300 M4 direct from IBM, and customize this value-priced performance tower.

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Important Legal Footnotes

1. Power management reduces processor speed when in battery mode
2. Includes battery and optional travel bezel instead of standard optical drive in Ultrabay™ modular bay, if applicable; weight may vary due to vendor components, manufacturing process and options.
3. Public network download speeds are limited to 53Kbps. Upload speeds are limited to 31.2 Kbps. Compatible phone line and server equipment required. Actual speeds depend on many factors and are often less than the maximum possible. V.92 modem requires dowwnload of V.92 microcode.
4. For hard drive, GB=billion bytes. Accessible capacity is less; up to 4GB is service partition.
5. CD-ROM and DVD-ROM drives list maximum rates; rates are variable and are often less than the maximum. For combination drives, maximum speeds are given in the following order: CD read, CD write, CD re-write, DVD read.
6. A description of the testing and the environment under which the test was performed is available at Battery life (and recharge times) will vary based on many factors including screen brightness, applications, features, power management, battery conditioning and other customer preferences.
7. Support unrelated to a warranty issue may be subject to additional charges. For systems with Limited Onsite Service Limited Warranties, these machines are designed to be repaired during the applicable warranty period primarily with customer-replaceable parts. A technician will be sent onsite to perform a repair if (a) remote telephone diagnosis and/or customer part replacement are unable to resolve the problem, or (b) the part is one of the few designated for on-site replacement. For a list of onsite replaceable parts, contact IBM (for eServer, Intellistation and xSeries products). For machines with Customer-Replaceable Parts Only Limited Warranties, these machines are designed to be repaired entirely with customer-replaceable parts. Only replacement parts and telephone support will be provided to assist installation. Additional service or support will result in additional charges.
8. Maximum memory varies depending on model and may require replacement of standard memory with optional maximum memory module. For models with 4GB maximum memory, accessible memory will be less than 4GB depending on the system configuration. For IntelliStation A Pro workstations, maximum physical memory is 8GB per processor (16GB total) running under select 64-bit Linux distributions; addressable capacity is less. Maximum system memory is contingent on general availability of 2GB memory modules. Maximum physical memory is 4GB running under Microsoft Windows XP Professional 32-bit operating system; addressable capacity is less.
9. Requires Internet access account, available separately.
10. Bluetooth and the Bluetooth logo are trademarks owned by Bluetooth SIG, Inc. USA and licensed to Lenovo Corporation. 11a, 11b and 11g wireless are based on IEEE 802.11a, 802.11b and 802.11g, respectively. An adapter with 11a/b or 11a/b/g can communicate on any of its supported formats; the actual connection will be based on the access point to which it connects. Wireless upgradable models can be wireless enabled with the addition of an optional wireless LAN Mini PCI Card. These systems are designed to operate only with wireless LAN Mini PCI options sold by Lenovo.
11. ThinkPad X Series notebooks have alphanumeric typing keys that are spaced 18.5 mm vertically and 18.2 mm horizontally, which is defined as full-sized by ISO/IEC 15412 and key displacement (stroke) is 2.5 mm, which is defined as full stroke by ISO/IEC 15412.
12. Some software may differ from its retail version (if available), and may not include user manuals or all program functionality. License agreements may apply. Certain Microsoft® software product(s) included with this computer may use technological measures for copy protection. IN SUCH EVENT, YOU WILL NOT BE ABLE TO USE THE PRODUCT IF YOU DO NOT FULLY COMPLY WITH THE PRODUCT ACTIVATION PROCEDURES. Product activation procedures and Microsoft's privacy policy will be detailed during initial launch of the product, or upon certain reinstallations of the software product(s) or reconfigurations of the computer, and may be completed by Internet or telephone (toll charges may apply).
13. EasyServ customers may be asked certain diagnostic questions before a courier is sent. Your ThinkPad purchase includes this depot service, available in the US, Mexico and most of Canada, during the limited warranty period.
14. Thickness may vary at certain points on the system.
15. Level of support varies by operating system. Operating systems not pre-loaded on the system may not provide full-feature functionality. Please refer to, select a notebook brand, click on "Product Information," choose your machine type, then click on "Product Limitations." For operating system support for xSeries and Intellistation products, see the specifications for the product.
16. Titanium Composite Carbon Fiber Reinforced Plastic has three times the strength of ABS plastic as tested by Lenovo using the high flex modulus test on 2/28/00.
17. Response times may vary. May exclude some holidays.
18. ThinkPad X Series notebooks require the UltraBase Media slice to use Ultrabay devices.
19. Requires customer customization or software from a third-party solution provider.
20. Update Connector is available to registered customers during the limited warranty period at no charge. Line charges may apply.
21. Lenovo makes no warranties, express or implied, regarding ThinkPad Proven or NetVista Proven products and services, including any implied warranties of merchantability or fitness for a particular purpose.
22. Signal strength will vary based on distance from network access point.
23. International Warranty Service is available in any country in which this product is sold and serviced. Service delivery methods and parts availability vary by country, may be different from that in the country of purchase, and are subject to change without notice. Fees and restrictions may apply in some countries.
24. Requires compatible wireless-enabled options, sold separately.
25. These data migration solutions cannot be used for transfer of operating systems or applications.
26. Asset ID allows your computer to be "scanned" by various radio frequency-emitting scanning devices that must be purchased separately from independent companies.
27. These services are available for machines used for business, professional or trade purposes rather than personal, family or household purposes. Subject to IBM ServicePac Maintenance Service Agreement. The customer may be asked certain diagnostic questions before a technician is sent.
28. Not all form factors available in all countries.
29. As of August 10, 2001, Lenovo alone offers an embedded data-encrypting security subsystem on desktop systems.
30. Data transfer speeds vary and are often less than the maximum possible. These transfer rates require that both desktop and network infrastructure (such as servers and wiring) support Gigabit Ethernet.
31. Data transfer rates vary and are often less than the maximum possible.
32. Can be wireless enabled with the addition of an optional wireless LAN Mini PCI Card. These systems are designed to operate only with wireless LAN Mini PCI options sold by Lenovo.
33. Actual device range and data transfer speed depend upon many factors and are often less than the maximum possible.
34. Public access not available in all areas. Access fees may apply.
35. Service is sold separately by third-party service providers. Service fees will apply. These offerings are currently not available in all areas. The third-party providers, not Lenovo, are solely responsible for the wireless services. Please contact Lenovo for more details.
36. On models with Microsoft® Windows® XP Professional or Windows 2000 Professional.
37. Requires third-party digital certificate (not included).
38. Claim based on operating tilt drop tests.
39. Warranty Information: For a copy of the Statement of Limited Warranty applicable to an IBM product call 1-800-772-2227. Telephone support may be subject to additional charges. For on-site labor, IBM will attempt to diagnose and resolve the problem remotely before sending a technician. IBM makes no representation or warranty regarding third-party products or services.
40. Starting price may not include a hard drive, operating system, or other features
41. Users are responsible for complying with all copyright and license terms for the software contained in your image. Multiple Microsoft operating systems may require multiple licensing fees. Although more than one language may be available in the image, the customer may use only one language per system.
42. Actual savings vary depending upon your computing environment and are not guaranteed.
43. Based on IEEE 802.11a and 802.11b. This wireless LAN product has been designed to permit legal operation world-wide in regions in which it is approved. This product has been tested and certified to be interoperable by the Wireless Ethernet Compatibility Alliance and is authorized to carry the Wi-Fi logo.
44. The Lenovo Embedded Security Subsystem is not available on a PC from any other manufacturer.
45. Software not included. IBM makes no representation or warranties regarding non-IBM products.
46. Biometric or device authorization requires purchase of appropriate hardware/software, not included.
47. For the x226 server, this applies when 4GB PC2-3200 DIMMs are available. For the x236, x336 and x346 servers, this applies when 2GB PC2-3200 DIMMS are available.
48. The most secure log-in process is achieved when used in conjunction with the Lenovo Embedded Security Subsystem and Lenovo Client Security Software available on select models of ThinkCentre™ desktop and ThinkPad® notebook computers and configuring to require both fingerprint and password authentication. When active, the Embedded Security Subsystem requires the user to type in a passphrase once per boot up, even if the system is configured for fingerprint authentication only. Non-Embedded Security Subsystem models can be configured for fingerprint-only authentication that does not also require typing in a password. This configuration offers convenience, but security is not significantly better than using typed passwords only.
49. You cannot get a higher level of security as a standard feature on a PC from any other manufacturer.
50. Lenovo customers will be contacted after purchase to activate Verizon service. Requires separate service contract with Verizon; monthly service charges and airtime charges will apply. Roaming charges may also apply. Verizon, not Lenovo, is solely responsible for the Verizon Wireless service. Service not available in all areas, actual throughput speeds may vary.
51. Speed averages 400-700 kbps based on network tests with 5 MB FTP data files, without compression. Speed declines with distance from cell site and is limited to 1.54 Mbps at certain cell sites with backhaul limitations. Number of users on the Verizon Wireless data network may also affect maximum possible speed. Average upload speeds expected to be between 60-80 Kbps. Speed claim based on network tests with 5 MP FTP data files, without compression. Actual speeds and coverage may vary.
52. Based on manufacturers' published figures and results for 14" widescreen notebooks offered by the top 10 notebook vendors in the second quarter of 2005 as reported by IDC.
53. ThinkVantage™ Client Security Solution: Preloaded on select models; requires software download.
54. System performance, battery life, high-definition quality and functionality, and wireless performance and functionality will vary depending on your specific operating system, hardware and software configurations. System performance is measured by MobileMark* 2005. References to improved battery life, if applicable, refer to previous generation Intel® Centrino® mobile technology platforms.
55. Wireless connectivity and some features may require you to purchase additional software, services or external hardware. Availability of public wireless LAN access points is limited, wireless functionality may vary by country and some hotspots may not support Linux-based Intel Centrino technology systems.
56. "Worry-free" means that Lenovo 3000 offerings have several features and service and support that take the worry out of PC computing.
57. Weight may vary due to vendor components, manufacturing process and options.
58. Two different processor wattage options are offered in the LS21 and LS41: a 95W version and a High Efficiency 68W version. Versions of the LS21/41 that use the 95W processors are designed for use in the BladeCenter H chassis. Due to increased power and thermal needs, these 95W versions will run at 'n-2' processor speed in the BladeCenter and BladeCenter T chassis. In most cases this represents a speed reduction of 400 MHz. The versions of the LS21/41 that use the High Efficiency 68W processors will run at full speed in all chassis.