LoadMaster 4000

Better Performance. Better Price. Best Choice.

Delivering 8 Gbps L7 throughput and 2500 SSL transactions per second (TPS), the LoadMaster™ 4000 offers the capacity and features to support high volume web infrastructure environments. Combining the latest advancements in Layer 4 to Layer 7 application delivery technology, LoadMaster™ is the Application Delivery Controller (ADC) of choice for providing high availability services in cloud, web and application infrastructures. More tech specs.

  KEMP LM-4000 F5 Big IP LTM i2600 F5 Big IP LTM i2800
Single Unit MSRP (US)* $10,000 $17,995 $27,995
Active/Standby HA (Pair)
Base Bundle
(Limited Time)
$35,990 $55,990
Application Throughput (L7) 8 Gbps 10 Gbps 10 Gbps
SSL TPS (2k Keys) 3,000 2,500 4,300
10 Gigabit SFP+ Ports 2x (Included) 2x (Sold Separately) 2x (Sold Separately)
FIPS 140-2 Encryption Standard N/A N/A
Virtual ADC - Full Perpetual License** Choice of AWS, Azure, VMware, Hyper-V Included with Enterprise + Sold Separately Sold Separately
N + M Clustering (Dynamically add additional “Active” units for extra capacity) Standard N/A N/A
Application Access & Security Mgmt. Enterprise APM Add-on Module
(Sold Separately)
APM Add-on Module
(“Best” License Upgrade)
Web Application Firewall (WAF) Included with Enterprise + ASM Add-on Module
(Sold Separately)
ASM Add-on Module
(“Best” License Upgrade)
GSLB (Global Traffic Management) Included with Enterprise + GTM Add-on Module
(Sold Separately)
GTM Add-on Module
(“Best” License Upgrade)
Centralized Management and Administration, Full API Included with Enterprise BIG-IQ Add-on Software
(Sold Separately)
BIG-IQ Add-on Software
(Sold Separately)
Proactive monitoring service with Predictive Remediation Included with Enterprise N/A N/A
Typical End-User Cost* (2x units HA)
Fully Configured w/Enterprise 7x24 Support
Includes Enterprise + Subscription
$40,000 (base only)
Full Features require License Upgrade to LTM i2800 at $12k per unit + “Better” or “Best” license upgrade
(includes “Better” license bundle at $29K per unit + Support. Some Add-ons require “Best” license upgrade

*Listed prices are USD-based MSRP and subject to change without prior notice. Prices vary by country and exclude local taxes, duties and transportation charges. Please contact your local KEMP office or authorized distributor for further pricing information specific to your country. All LoadMasters must be licensed prior to use in the country where they were purchased and are subject to local licensing and trade regulations.
**Includes one full VLM-200 ADC perpetual license with 1st year basic support. **Choice of platforms include AWS, Azure, VMware, Hyper-V.

Technical Specs

Hardware Specification

  • Intel Quad Core Processor
  • 2 X 1GbE Auto-negotiating, Full Duplex ports
  • 2 x 10G (SFP+) ports
  • 8 GB RAM
  • Local admin via serial and VGA/USB
  • Dimensions: 426mm (W) x 365mm (D) x 44mm (H)
  • Weight: 17.6lbs (7.9kg)
  • 250W ATX power supply
  • Certifications: CE/FCC Class A, UL Listed, RoHS Compliant, VCCI
  • Total Power Consumption (W): 199
  • Input Voltage: 90-264 VAC; 47-63Hz
  • Total BTU Heat Output: 1040 BTU/hr
  • Storage Temperature: -40 to 149 °F (-40 to 65°C)
  • Operating Temperature: 50 to 95 °F (10 to 35 °C)
  • Operating Relative Humidity: 20% to 80% non-condensing


  • Max Balancer L4 Throughput Up To 8.2Gbps
  • Max Balancer L7 Throughput Up To 8.0Gbps
  • 165,000 L7 (http) requests per second
  • 250,000 L7 concurrent connections
  • 15,200,000 L4 concurrent connections
  • SSL Acceleration 2K Keys up to 3,000 TPS
  • SSL Acceleration 1K keys up to 6,000 TPS

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