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4th November 2003, 23:45 | #11 |
Member Join Date: May 2002
Posts: 1,343
| indeed - don't mind asking a few meters extra, there's plenty for everyone |
5th November 2003, 13:19 | #12 |
Member Join Date: May 2002
Posts: 1,543
| shorter cable= better. i'll never need over 20m ahh what the heck, in a lan it might be usefull to have 40-50m. you never know where the gigabit switch is |
5th November 2003, 13:29 | #13 |
Madshrimp Join Date: May 2002 Location: 7090/Belgium
Posts: 79,021
| he means to order more then just 20m, doesn't matter if you cut in three or four pieces. But these cables come in a box , rolled up and accounts for a 300-350m. see my point?
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5th November 2003, 16:05 | #14 |
[M] Reviewer/HWBot ***** Join Date: May 2002
Posts: 3,344
| Stupid me, I didn't even bother to check what kind of cable I had. It says "Cat5-enhanced verified for gigabit lan". I guess Cat5 is being replaced with cat5e, because I didn't even notice when I bought it a few months back. The speed is not that great though: with a 3m crossed cable between 2 IS7's (PCI lan, but nothing else on PCI bus), I get an average of 25% (30MB/sec) transferring data between two sata disks. Theoretical max: Maxtor 120GB SATA (50MB/sec sequential read/write) <> 3Com gigabit lan on PCI (125MB/sec) <> 3M cat5-e crossed cable <> 3com gigabit on PCI (125MB/sec) <> 2*SATA 80GB on ICHR-5 raid 0 (75MB/sec sequential read/write) So why do "only" get 30MB/sec avg?
__________________ HTPC (mac osx): Mac Mini | Core Duo 1.6Ghz | 2GB DDR2 | 26\" TFT Development (mac osx): Macbook | Core 2 2.0Ghz | 4GB DDR2 | 250GB HD Games (win xp): E2160 @ 2.4Ghz | HD3850 OC | Asrock 4coredual-vsta | 2GB DDR2 |
5th November 2003, 16:17 | #15 |
Madshrimp Join Date: May 2002 Location: 7090/Belgium
Posts: 79,021
| 30mb/s is like 3x 100mbit pretty good in my humble opinion
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5th November 2003, 16:30 | #16 |
[M] Reviewer/HWBot ***** Join Date: May 2002
Posts: 3,344
| Yeah it's certainly fast, I was just wondering what could be the bottleneck. Judging from benchmarks (giving me an average seq read/write) and the sound of my hard disks, they're not wroking at maximum capacity.
__________________ HTPC (mac osx): Mac Mini | Core Duo 1.6Ghz | 2GB DDR2 | 26\" TFT Development (mac osx): Macbook | Core 2 2.0Ghz | 4GB DDR2 | 250GB HD Games (win xp): E2160 @ 2.4Ghz | HD3850 OC | Asrock 4coredual-vsta | 2GB DDR2 |
5th November 2003, 17:01 | #17 | |
Madshrimp Join Date: May 2002 Location: 7090/Belgium
Posts: 79,021
| HD -> sys bus -> MEM -> CPU -> NETW ----- NETW -> sysbus -> MEM -> CPU -> HD every step scrapes some Mb's of that ideal theoretical gigabit in my humble opinion Quote:
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