1Gb broadband not hitting expected average speed

[SpookyElectric1]

So I was lucky enough to get the 1Gb broadband upgrade via the Volt promotion (after a lot of wrangling with the Virgin chat team!).

I'm getting speeds of around 50-52Mb upload, which is great, but only 900-940Mbps download (which I understand is incredibly fast, but not the advertised average and promised download speed of 1,130Mpbs).

I am running the speed test DIRECTLY from the router's own built-in app (Netgear Nighthawk XR500), which is connected via Ethernet to the underwhelming (for WiFi coverage) Virgin router in modem mode.

Is this speed about right, or should I be getting closer to the 1,130Mbps advertised (ie. about 100Mb faster)?

[SpookyElectric1]

Cable Modem StatusItem Status CommentsChannel Overview Downstream Upstream

Cable Modem Status	Online	DOCSIS 3.1
Primary downstream channel	Locked	SC-QAM
DOCSIS 3.0 channels	31	4
DOCSIS 3.1 channels	1	0

[SpookyElectric1]

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

22	306750000	3.900002	40.366287	QAM256	22
1	138750000	5.900002	38.983261	QAM256	1
2	146750000	6.099998	40.366287	QAM256	2
3	154750000	6.500000	40.366287	QAM256	3
4	162750000	6.599998	40.366287	QAM256	4
5	170750000	6.400002	38.983261	QAM256	5
6	178750000	6.300003	40.366287	QAM256	6
7	186750000	6.099998	40.946209	QAM256	7
8	194750000	5.900002	40.366287	QAM256	8
9	202750000	5.900002	40.946209	QAM256	9
10	210750000	5.900002	40.366287	QAM256	10
11	218750000	5.900002	40.366287	QAM256	11
12	226750000	5.900002	40.366287	QAM256	12
13	234750000	5.800003	38.983261	QAM256	13
14	242750000	5.800003	40.366287	QAM256	14
15	250750000	5.900002	40.946209	QAM256	15
16	258750000	5.900002	38.605377	QAM256	16
17	266750000	5.900002	38.605377	QAM256	17
18	274750000	5.800003	38.983261	QAM256	18
19	282750000	5.099998	38.983261	QAM256	19
20	290750000	4.400002	38.983261	QAM256	20
21	298750000	3.900002	40.366287	QAM256	21
23	314750000	3.900002	38.983261	QAM256	23
24	322750000	3.900002	38.605377	QAM256	24
25	330750000	3.700001	38.983261	QAM256	25
26	338750000	3.500000	38.983261	QAM256	26
27	346750000	3.700001	38.983261	QAM256	27
28	354750000	3.700001	38.605377	QAM256	28
29	362750000	4.000000	38.605377	QAM256	29
30	370750000	3.900002	38.983261	QAM256	30
31	378750000	4.099998	38.983261	QAM256	31

3.0 Downstream channels

Channel Lock Status RxMER (dB) Pre RS Errors Post RS Errors

22	Locked	40.366287	1	0
1	Locked	38.983261	0	0
2	Locked	40.366287	0	0
3	Locked	40.366287	0	0
4	Locked	40.366287	0	0
5	Locked	38.983261	0	0
6	Locked	40.366287	0	0
7	Locked	40.946209	0	0
8	Locked	40.366287	0	0
9	Locked	40.946209	0	0
10	Locked	40.366287	0	0
11	Locked	40.366287	0	0
12	Locked	40.366287	0	0
13	Locked	38.983261	0	0
14	Locked	40.366287	0	0
15	Locked	40.946209	0	0
16	Locked	38.605377	0	0
17	Locked	38.605377	0	0
18	Locked	38.983261	0	0
19	Locked	38.983261	0	0
20	Locked	38.983261	0	0
21	Locked	40.366287	1	0
23	Locked	38.983261	2	0
24	Locked	38.605377	0	0
25	Locked	38.983261	0	0
26	Locked	38.983261	0	0
27	Locked	38.983261	0	0
28	Locked	38.605377	0	0
29	Locked	38.605377	0	0
30	Locked	38.983261	0	0
31	Locked	38.983261	0	0

3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)

33

94

4K

1840

QAM4096

424

3.1 Downstream channels

Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)

33

Locked

40

5.0

587310

0

[SpookyElectric1]

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	53700000	30.270599	5120 KSym/sec	64QAM	7
2	39400000	30.520599	5120 KSym/sec	64QAM	9
3	46200000	30.270599	5120 KSym/sec	64QAM	8
4	60300000	30.520599	5120 KSym/sec	64QAM	6

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	US_TYPE_STDMA	0	0	0	0
2	US_TYPE_STDMA	0	0	0	0
3	US_TYPE_STDMA	0	0	0	0
4	US_TYPE_STDMA	0	0	0	0

[SpookyElectric1]

General Configuration

Network access	true
Maximum Number of CPEs	1
Baseline Privacy	true
DOCSIS Mode	3.1
Config file	cmreg-vmdg640-bbt076+voc-b.cm

Primary Downstream Service Flow

SFID	53510
Max Traffic Rate	1230000450
Max Traffic Burst	42600
Min Traffic Rate	0

Primary Upstream Service Flow

SFID	53509
Max Traffic Rate	55000270
Max Traffic Burst	42600
Min Traffic Rate	0
Max Concatenated Burst	42600
Scheduling Type	bestEffort

[Anonymous]

You're using modem mode. There's a gigabit link between your router and the hub and that's the bottleneck. 

If your router has dual WAN capability you may use that to increase performance. 

Believe the promised speed on Gig1 is 570 Mb, 1130 average, not guaranteed. 

[SpookyElectric1]

So, if I connected ethernet directly to the Virgin hub (in router mode) instead of the Netgear router, would I get faster speeds? I'm certainly not worried about the extra 100Mb but I like to know the technical reasons for things! The router is not Dual WAN capable. I use it for the better WiFi coverage, although most devices are connected with Ethernet FWIW I'm using Cat8 ethernet cables throughout.

Yes, the guaranteed speed is indeed 570Mb, which I'm surpassing, but all the advertising says 1130Mb average. When I was on the 500Mb line I was hitting 550Mb, so really just wanted to check I was getting the best I could with the 1Gb line!

[risc19]

For a single device you are never going to get over 940mb due to the fact the hub4 uses 1 gig ports.

Yes it is possible to bond two 1gig lines but its not easy and most routers dont have the correct protocol to get it to work.

Virgin '1130Mb average' comes into play if for example you were maxing out two of the 1gig ports (on different devices)

Or one on ethernet and one on WIFI simultaneously.

They are not fibbing when they say 1130Mb average but it's not exactly the whole truth either.

[SpookyElectric1]

Got it, thanks!

"They are not fibbing when they say 1130Mb average but it's not exactly the whole truth either." 🤣

[Roger_Gooner]

The advertised speed of 1130Mbps is that into the hub as measured by SamKnows and has nothing to do with the speed out of a LAN port (which cannot exceed about 940Mbps).