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Apple Broadband Tuner allows you to take full advantage of very high speed Internet connections that have a high latency (5 Mbps or faster). The installer tweaks some system parameters.

There is an optional uninstaller that can be used to restore the settings that were in effect at the time just before the system parameters were changed.

The installer increases the default values for the size of the TCP send and receive buffers. With larger buffers more data can be in transit at once. A startup configuration file is also updated so that these changes will persist across restarts.

The system parameters are sysctl more...


Mac OS X 10.4 or later

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Apple Broadband Tuner User Discussion

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adguy Member IconComment+0

Just installed BroadbandTuner 1.0. It definitely added speed but I have noticed a little quirkiness on my desktop. ICONS disappear for a second and appear again. Running OSX 10.4.11.

Anyone notice this? Any advice?

Reply0 replies
Version 1.0
Mok.In.Touch™ Member IconReview+24

It works for me. I'm on cable. It increases about 40% of speed. BroadbandOptimizer didn't do the job, but this does. Try it for yourself with this slow website in the world: tagworld.com
It used to take up to 165 seconds to load. I am very picky on internet speed, but I'm very, very happy with this Apple Broadband Tuner 1.0

Reply0 replies
Version 1.0
Marc Opas Member IconReview+1
Marc Opas

Slowed my cable connection dramatically. Use Xupport to optimize the settings for Cable Modem or DSL. Apple's Broadband Tuner is really for super high speed connections, like Verizon fios, not cable or DSL.

Reply1 reply
Version 1.0

Yeah I got the same thing but I'm not gonna complain cause Apple said 5mb/s or up so we can't blame them good on them for providing this :D Shot again Apple

airel Member IconComment+0

I tried this on my G5 connected to cable modem and got a DECREASE in speed. Fortunately it comes with an uninstaller. Be sure to have a way to clock your upload and download speeds, so you can check this program.

Reply1 reply
Version 1.0

Where did you find the BroadbandTuner uninstall?

Johnny Rocket Member IconComment+18
Johnny Rocket

to FLASH1296's comment "Obviously, one needs to rerun this installer EVERY time the O S is reinstalled." Well, duh. Everything needs to be reinstalled if you reinstall the OS. Also, I've used Maintain for a long time now. In the current version you can either set the Net Speed Up to: Default, Increase Values [which only doubles, no triple or quadruple], or Pick your own. It is a good program but once you reboot, those values must be set again. Apple Broadband Tuner permanently sets the values. ABT is a 1.0 so I'm sure it's feature set will expand in future releases. [at least I home it does!]

Reply1 reply
Version 1.0

It's "hope", duh.

FLASH1296 Member IconReview+297

Obviously, one needs to rerun this installer EVERY time the O S is reinstalled.

There are numerous freeware and shareware applications that willl perform this function; with most of them doing a FAR BETTER job.

Try freeware "maintain" [available here at MacUpdate.com]. What makes it better, you muse?
Try this: Not only does it modify more internet connection parameters, (see below); but it offers you TWO separate options. Either simply double everything or selectively double, triple, quadruple whatever parameters you select; e.g. "sendspace", etc.
I STRONGLY suggest trying "maintain" The improvement in your internet connection is but one of many benefits available employing "maintain."

net.inet.tcp.mssdflt: 512
net.inet.tcp.newreno: 0
net.inet.tcp.rfc1323: 1
net.inet.tcp.sendspace: 131072
net.inet.tcp.recvspace: 358400
kern.ipc.maxsockbuf: 512000
net.inet.tcp.delayed_ack: 1
net.inet.udp.recvspace: 42080
net.inet.udp.maxdgram: 9216
net.local.stream.recvspace: 8192
net.local.stream.sendspace: 8192
kern.ipc.somaxconn: 128 -> 512
net.inet.tcp.newreno: 0 -> 1
net.inet.tcp.mssdflt: 512 -> 1460
net.inet.tcp.sendspace: 131072 -> 98304
net.inet.tcp.recvspace: 358400 -> 98304
kern.ipc.maxsockbuf: 512000 -> 1048576
net.inet.tcp.delayed_ack: 1 -> 0
net.inet.udp.recvspace: 42080 -> 98304
net.inet.udp.maxdgram: 9216 -> 57344
net.local.stream.recvspace: 8192 -> 98304
net.local.stream.sendspace: 8192 -> 98304
net.inet.tcp.rfc1323: 1 -> 1
net.inet.tcp.rfc1644: 0 -> 1

Reply1 reply
Version 1.0

Can't find anything called simply "Maintain". Are you talking about maintain1 7.5_PRO?

virtualelvis Member IconReview+0

definitely feels faster... nice app thanks

Reply0 replies
Version 1.0
FreeFrog Member IconReview+0

Works well with my DSL connection. No issues whatsoever.

Reply0 replies
Version 1.0
Anonymous Member IconReview

g4 450 OS X 10.4.3
620 KB/s

This Software makes my "feeled" surfing faster... Using "BroadbandOptimizer 1.5" for years on 10.3.9 but for Tiger this App is better...

Reply0 replies
Version 1.0
Anonymous Member IconReview

I installed it and have had no problems. Plus I have seen an increase in speed. I am running Tiger and did not have to re-install it from scratch as mentioned above.

Reply0 replies
Version 1.0
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> 4 12


Current Version (1.x)


Downloads 29,788
Version Downloads 21,570
License Free
Date 28 Nov 2005
Platform OS X / PPC 32
Price Free
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