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Ritmix RZX-50

Ritmix RZX-50 by KoHotech, now discontinued, Horizontal retro handheld, running OpenDingux, powered by Ingenic JZ4755, with a 4.3 inch display

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Specifications

58 of 65 catalogued fields are filled in for this handheld. Anything the catalogue has not recorded is labelled Not documented rather than estimated.

Identity

Brand
KoHotech
Release Date
2011
Price
Discontinued
Pricing category
Discontinued

Form factor & shell

Form Factor
Horizontal
Shell material
Plastic
Colors
Black
Dimensions
182 mm x 80 mm x 15 mm
Weight
192 grams
Cooling
Not documented

Operating system

Operating System
OpenDingux

Performance

System on a Chip
Ingenic JZ4755
CPU
XBurst
CPU cores
1 Core
CPU threads
1 Thread
CPU clock speed
400 MHz
Architecture
MIPS
GPU
Not documented
GPU cores
Not documented
GPU clock speed
Not documented
RAM
64 MB DDR2
Performance rating
4/10 · C+

Display

Screen size
4.3 inch
Screen type
TFT
Resolution
480 x 272
PPI
128.3 PPI
Aspect ratio
16:9
Screen refresh rate
60 Hz
Screen lens
Plastic

Battery & charging

Battery
1800 mAh
Charge port
Mini USB
Storage
Internal 4 GB & External MicroSD

Controls

D-pad
Cross Upper placement
Analogs
Not documented
Face buttons
4 Buttons
Shoulder buttons
L1, R1
Extra buttons
Hold, Reset
Rumble
Not documented
Volume control
Menu
Brightness control
Menu
Power control
Switch

Connectivity

Connectivity
Not documented
Video output
AV Out
Audio output
3.5mm Headphone
Speaker
Dual Stereo Front facing
Sensors
Microphone

Emulation grades

Game Boy
A
Nintendo Entertainment System
A
Sega Genesis
B
Game Boy Advance
B
Super Nintendo
C
PlayStation 1
C
Nintendo DS
F
Nintendo 64
F
Dreamcast
F
PSP
F
Sega Saturn
F
GameCube
F
Wii
F
Nintendo 3DS
F
PlayStation 2
F
Wii U
F
Nintendo Switch
F
PlayStation 3
F
Emulation limit
Most SNES runs at 60 FPS but lags with FX & Mode 7 games, most 2D PS1 runs fine (not all at full 60 FPS) but lags with 3D games

Where To Buy

Marketplace rows use affiliate-friendly links where available. Average price stays based on the console database, not live per-store pricing.

Store Price
Amazon
Amazon search results
Discontinued
AliExpress
AliExpress search results
Discontinued
Alibaba
Alibaba search results
Discontinued

Affiliate disclosure and terms are linked in the footer.

Ritmix RZX-50 review: why this horizontal handheld is more interesting than it first looks

Budget shortlist candidate

Ritmix RZX-50 from KoHotech is the kind of retro handheld that makes sense only once you stop reading the spec sheet like a trophy case and start reading it like a buyer.

Ritmix RZX-50 is not trying to win every argument at once; its appeal lives in the balance between emulation comfort, day-to-day usability, and whether its price still feels sane.

Best For

  • Shoppers who want a focused retro machine with a clear role.
  • Best fit for Game Boy (A), NES (A), and Sega Genesis (B).
  • Designed around a horizontal handheld shape.

Why It Hooks You

  • Overall rating sits at 4/10 · C+.
  • TFT display story helps define the vibe.

Watch Outs

  • Some systems, including Super Nintendo (C) and PlayStation 1 (C), may need more tuning.

Spec Snapshot

Before the review gets opinionated, here is the clean spec picture. This table is the reality check that keeps the rest of the write-up grounded.

CategoryDetails
BrandKoHotech
Release2011
Form factorHorizontal
Operating systemOpenDingux
Overall performance4/10 · C+
SoCIngenic JZ4755
CPUXBurst, 1 Core, and 400 MHz
RAM64 MB DDR2
Display4.3 inch, TFT, and 60 Hz
Resolution480 x 272, 16:9, and 128.3 PPI
Battery and cooling1800 mAh
Storage and I/OInternal 4 GB & External MicroSD, Mini USB, AV Out, and 3.5mm Headphone
PriceDiscontinued

If this review pulls you in, the fastest next rabbit hole is GCW Zero and Joyou A320+, because those are the products most likely to clarify whether Ritmix RZX-50 is your real match or just your current curiosity.

What It Should Feel Like In Hand

Ritmix RZX-50 pairs the hardware with 4.3 inch, TFT, 60 Hz, 480 x 272, 16:9, and 128.3 PPI. That is the kind of detail stack retro buyers should linger on, because a handheld can be technically capable and still feel wrong if the aspect ratio, sharpness, and scaling story are off. The screen protection is listed as Plastic, a small clue that often hints at how polished or rough the front face might feel in daily use.

The controls are described with Cross Upper placement, 4 Buttons, L1, R1, and Hold, Reset. That matters more than many spec sheets admit, because the difference between a fun handheld and a fatiguing one often shows up in the D-pad, shoulder shape, and how naturally the thumbs settle into place. This is where a retro handheld stops being abstract and starts becoming a piece of physical furniture for your hands.

The 16:9 aspect ratio adds another layer to the story. Some buyers want sharp all-purpose flexibility, others want a screen that flatters the systems they actually play most. Good reviews should make that tradeoff visible instead of pretending every resolution solves every problem.

Price, Availability, and Value Pressure

Retro handhelds are almost never judged in isolation; they are judged against the five other devices sitting one tab away in a buyer's browser.

The spreadsheet points shoppers toward Ebay for availability. That matters because storefront quality, shipping confidence, and after-sales expectations often shape the emotional experience of a purchase before the box even arrives.

Every handheld makes tradeoffs somewhere, even when the spreadsheet leaves them unstated. That is why value is always a conversation between specs and priorities. There is no universal bargain, only a good fit at the right moment.

Where The Hardware Should Hold Up

The heart of the machine is the Ingenic JZ4755. CPU duties are handled by XBurst. Memory is listed at 64 MB DDR2. The sheet rates the overall performance at 4/10 · C+, or roughly 2 on the normalized scale.

The CPU side is described with 1 Core, 1 Thread, and 400 MHz, which is more useful than brand names alone because it hints at how much headroom the handheld should have before emulator tuning gets annoying. On the graphics side, MIPS helps sketch the ceiling for heavier systems, upscale experiments, and shader curiosity.

Ritmix RZX-50 looks strongest with Game Boy (A), NES (A), Sega Genesis (B), and Game Boy Advance (B), which gives the review something more tangible than a vague "good for retro" verdict. The listed emulation limit, Most SNES runs at 60 FPS but lags with FX & Mode 7 games, most 2D PS1 runs fine (not all at full 60 FPS) but lags with 3D games, is the kind of line buyers should actually respect because it tells you where the romance ends and the compromise begins.

The middle tier of compatibility, including Super Nintendo (C) and PlayStation 1 (C), is where the buyer needs some honesty. These are usually the systems that separate a casual dabbler from a user who is happy tweaking emulator settings, testing cores, or accepting the occasional rough edge.

If You Are Comparing It To Nearby Rivals

ConsoleAnglePricePerformanceWhy Click Through
GCW Zero
Game Consoles Worldwide
More PowerfulDiscontinued6/10 · Bsame operating system, horizontal layout.
Better ValueDiscontinued4/10 · C+horizontal layout, rated 4/10 · C+.
GameGadget
Blaze Europe
Better ValueDiscontinued4/10 · C+horizontal layout, rated 4/10 · C+.
Better ValueDiscontinued5/10 · B-horizontal layout, rated 5/10 · B-.

Ritmix RZX-50 becomes much easier to judge once it is forced into the same room as GCW Zero, Joyou A320+, and GameGadget. This is where a vague impression turns into a real buying decision, because each nearby rival throws a different kind of pressure on the table.

Ritmix RZX-50 versus GCW Zero is interesting because more powerful is the obvious angle. Compared with Ritmix RZX-50, GCW Zero makes the more obvious play for readers who care about more powerful. Its overall rating is 6/10 · B. In practice, ritmix RZX-50 versus Joyou A320+ is interesting because better value is the obvious angle. More importantly, compared with Ritmix RZX-50, Joyou A320+ makes the more obvious play for readers who care about better value. In practice, its overall rating is 4/10 · C+. That said, ritmix RZX-50 versus GameGadget is interesting because better value is the obvious angle. GameGadget sits close enough to Ritmix RZX-50 to make the comparison meaningful, but different enough to sharpen the buying decision.

The real benefit of this comparison set is not that it declares a single winner. It reveals which compromise profile feels least annoying over time.

Daily Use, Portability, and The Physical Reality

Ritmix RZX-50 is described with battery: 1800 mAh. Those are not background details; they shape noise, comfort, endurance, and whether the device feels eager to be used or mildly exhausting to keep fed. Audio is covered by Dual Stereo Front facing and 3.5mm Headphone, which matters for sofa play, travel, and late-night sessions when speakers and headphone output can quietly make or break the experience.

Physically, the device is outlined by 182 mm x 80 mm x 15 mm, 192 grams, Plastic, and Black. This is where you start picturing whether it is truly pocketable, only jacket-safe, or clearly a bag companion. Buyers often underestimate how much daily affection is driven by the little things: where the ports sit, how the shell feels, and whether the handheld seems built for real use instead of product photos.

The practical I/O story includes Internal 4 GB & External MicroSD, Mini USB, and AV Out. These details matter because many retro buyers are also collectors, tinkerers, dock-and-TV players, or people with large libraries that need sensible storage and transfer options.

How To Read This Device

Ritmix RZX-50 is best framed as a machine for shoppers who want a focused retro machine with a clear role. That may sound obvious, but it is the difference between buying a handheld that becomes a habit and one that turns into a drawer resident.

The horizontal shape matters here because it changes comfort, portability, and the kind of nostalgia the device leans into. The fact that it runs OpenDingux also affects what kind of setup work, app ecosystem, and tinkering ceiling buyers should expect.

The release timing listed as 2011 helps place it in context. Context matters because buyers are not comparing isolated products; they are comparing moments in the market.

Where The Recommendation Lands

Ritmix RZX-50 leaves the strongest impression when you frame it as a recommendation for shoppers who want a focused retro machine with a clear role. That framing keeps the review honest and stops the verdict from sliding into generic praise.

Budget shortlist candidate is not just a catchy label here. It is the cleanest shorthand for why this device deserves attention. The compatibility profile around Game Boy (A), NES (A), Sega Genesis (B), and Game Boy Advance (B) gives it a concrete identity.

If the device sparks your interest, the smartest next click is usually GCW Zero, followed by Joyou A320+, because that is where the shape of the market around it comes into focus. A useful verdict should leave the reader more curious, but also more precise.

Playable Games

Games shown here match systems this handheld can run at a B grade or better.

Ritmix RZX-50 — Frequently Asked Questions

Every answer is built from this console's own catalogue record. Where the record is empty, the answer says so rather than guessing.

Is the Ritmix RZX-50 an official KoHotech product?

The console database lists the Ritmix RZX-50 under the brand KoHotech. It does not document whether the Ritmix RZX-50 is an officially licensed KoHotech product.

When was the Ritmix RZX-50 released, and what does it cost?

The console database lists the release date as 2011 and the price as Discontinued for the Ritmix RZX-50.

What chipset and how much RAM does the Ritmix RZX-50 have?

The console database lists the system on a chip as Ingenic JZ4755, the CPU as XBurst, and the RAM as 64 MB DDR2 for the Ritmix RZX-50.

What are the Ritmix RZX-50's dimensions, weight and battery?

The console database lists the dimensions as 182 mm x 80 mm x 15 mm, the weight as 192 grams, and the battery as 1800 mAh for the Ritmix RZX-50.

Which systems can the Ritmix RZX-50 emulate well?

The console database gives the Ritmix RZX-50 a grade of B+ or better for 2 systems: Game Boy and Nintendo Entertainment System.

Where can I buy the Ritmix RZX-50?

The marketplace rows shown for the Ritmix RZX-50 are search and marketplace links, not a verified live price feed. The console database does not verify live prices or stock, so check the linked marketplace listings for current availability.

Sources & Editorial Notes

  • Specifications are taken from this handheld's entry in the Lost In Consoles catalogue, which is compiled from manufacturer documentation and public filings. How we compile device data.
  • Empty fields are published as Not documented. Nothing on this page is estimated, inferred or carried over from a similar device.
  • Spotted an error? Send a correction.