Samsung CLX-S8640T Review: Features, Specs, Performance
Overview: What is Samsung CLX-S8640T?
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The CLX-S8640T is not a standalone printer — it's a triple cassette feeder (paper tray accessory) designed for the Samsung CLX-8640ND (and related) series.
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This feeder adds 1,560 sheet capacity.
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In business deployments, this accessory is used to expand the paper capacity of the MFP, allowing for longer print runs, less frequent refilling, and better handling of different paper types simultaneously.
Key Features & Specs of the Base MFP (Samsung CLX-8640ND)
To understand how the S8640T is valuable, you need to know what base printer it's used with. Here are the main specs of the CLX-8640ND:
1. Printing / Copy / Scan Functions
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It’s a color laser MFP: supports print, copy and scan.
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Print speed: ~38 ppm (A4) for both mono and color in some specs.
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Print resolution: 600 × 600 dpi
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First-page-out: ~9 seconds for black, ~11 seconds for color.
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Copier speed: similar to print speed (~38–40 cpm depending on source).
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Copy resolution: up to 600 × 600 dpi.
2. Paper Handling
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Standard input: 520-sheet cassette + 100-sheet multipurpose (MP) tray.
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Automatic duplex (2-sided) printing: yes, built-in.
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Output capacity: 500 sheets in the standard bin.
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Media types supported: plain, thick, thin, envelopes, labels, cardstock, recycled, etc.
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Media sizes: up to large/custom sizes (some sources mention up to 8.5″ × 35.4″).
3. Scanning
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Scanner type: Flatbed + 100-sheet ADF.
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Optical scan resolution: up to 600 × 600 dpi.
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Enhanced scanning resolution: up to 4,800 × 4,800 dpi (interpolated) per spec.
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Scan destinations: scan to HDD, email, FTP, SMB, USB, PC.
4. Memory & Storage
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Standard memory: 1 GB.
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Has a 320 GB hard disk drive (HDD) in many models for storing scans, jobs, document box, etc.
5. Connectivity & Interface
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Network: Gigabit Ethernet (10/100/1000) standard.
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USB: High-speed USB 2.0 (device) + USB host port(s).
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Protocols: Supports a broad set (SMB, FTP, IPP, LPR, SNMP, HTTP, IPv6, 802.1x, etc.) per spec.
6. User Interface & Control
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7″ color touchscreen (800×480 WVGA) for control, settings, scanning etc.
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Touch panel helps with job setup, scan-to, copying and other functions.
7. Duty Cycle & Recommended Volume
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Maximum monthly duty cycle: 200,000 pages/month per spec.
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Recommended monthly volume: 5,000–12,000 pages (per HP support spec sheet).
8. Power & Noise
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Power consumption: up to ~900 W when printing, about 80 W in ready, ~1.5 W in sleep.
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Noise: ~59 dBA when printing.
9. Security & Software
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It supports Samsung’s “XOA” (eXtensible Open Architecture) for app integration.
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Advanced security features are standard (from spec sheet) to protect data.
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Support for scan to network, LDAP authentication, secure workflow.
10. Optional / Accessory (including S8640T)
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CLX-S8640T: Triple cassette feeder accessory (adds 1,560 sheet capacity).
Finisher: CLX-FIN25S (2-bin finisher) for stapling, etc.
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Fax Kit: CLX-FAX170 available.
Performance & Business Use
Strengths & Business Fit
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High Volume Capability: With standard 620-sheet capacity (or more with trays) and a high duty cycle, it's designed for busy offices.
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Versatile Paper Handling: Large input capacity, multiple tray options (with S8640T accessory), and support for various media types make it good for varied business print jobs.
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Full MFP Functionality: Print, scan, copy, (optional) fax — a one-stop device for many business workflows.
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Storage & Job Management: The built-in 320GB HDD enables scan-to-HDD, document box, job storage, which supports centralized workflows.
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Security: Advanced security (XOA, encryption) helps protect sensitive documents/business data.
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Scalability: With the optional triple tray feeder, the device can scale for departments that need to print large volumes.
Weaknesses / Considerations
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Large Footprint & Weight: This is a big, heavy machine — not suited to very small spaces or very compact offices.
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Energy Use: High power consumption in active use (~900W) means potential for high energy costs under heavy printing.
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Cost of Accessories: The triple cassette feeder (S8640T) is expensive and needs to be justified by volume.
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Maintenance: With 320GB HDD, high memory use, and heavy usage, maintenance (HDD, parts) could be more involved than smaller printers.
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Complexity for Small Offices: For offices that don’t need high volume or multiple trays, the base models might be over-spec’d and cost-inefficient.
Deployment Suggestions & Procurement Tips
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Volume Planning: Estimate monthly print volume carefully. Use the triple feeder (S8640T) only if 1,560 more sheet capacity will meaningfully reduce refill frequency.
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Paper Types: Use different trays for different media (e.g., plain paper, special media) for flexibility.
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Location: Because of its physical size and weight, place it in a print room or dedicated corner, not on a small desk.
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Network Integration: Use its Gigabit LAN and network protocols for shared office deployment.
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Secure Print / Workflows: Leverage XOA apps, secure print, and scan-to-folder to support business security policies.
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Maintenance Strategy: Keep spare toners (CLT-K659S for black, CLT-C/M/Y659S for colors) and plan HDD maintenance for scan/document box.
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Energy Policy: Use power-saving modes when not in use (sleep) to minimize energy cost.
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User Training: Teach staff how to use the touchscreen, scan-to-HDD, load different trays, and use finishing options if installed.
Final Verdict
The Samsung CLX-S8640T is not a printer itself, but a valuable accessory (triple cassette feeder) for the CLX-8640ND multifunction color printer. When used with the 8640ND, it enables high-capacity, high-volume printing — ideal for large offices or departments with heavy paper throughput.
If you’re evaluating this combo:
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✅ Go for the S8640T if you already have (or plan to buy) the CLX-8640ND and you need to handle large print volumes or reduce tray refills.
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⚠ If your office printing volume is moderate or low, or you don’t print large batches often, the base 8640ND without the extra feeder may be sufficient and more cost-effective.
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