Root Server G12 underwhelming performance

hnhanxiii · Dec 11th 2025

Hi everyone, yesterday I bought a RS G12 1000 Ultra on the Advent Calendar discount. Today Netcup sent me the info for the server and. I logged in and run a benchmark script from: https://github.com/masonr/yet-another-bench-script. To my surprise, both the single core and multi core performance seem pretty underwhelming: https://browser.geekbench.com/v6/cpu/15512940

I don't know what I did wrong here. I checked on geekbench page for similar results with netcup and found people got much higher numbers with the same processor: https://browser.geekbench.com/v6/cpu/15508766. Does anyone know why?

For some context, I just logged in the server via ssh root@ip-that-netcup-provided and did the test there.

# ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## #

# Yet-Another-Bench-Script #

# v2025-04-20 #

# https://github.com/masonr/yet-another-bench-script #

# ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## #

Thu Dec 11 05:18:09 PM CET 2025

Basic System Information:

---------------------------------

Uptime : 0 days, 2 hours, 55 minutes

Processor : AMD EPYC 9645 96-Core Processor

CPU cores : 6 @ 2296.550 MHz

AES-NI : ✔ Enabled

VM-x/AMD-V : ❌ Disabled

RAM : 11.7 GiB

Swap : 0.0 KiB

Disk : 503.9 GiB

Distro : Debian GNU/Linux 13 (trixie)

Kernel : 6.12.57+deb13-amd64

VM Type : KVM

IPv4/IPv6 : ✔ Online / ✔ Online

IPv6 Network Information:

---------------------------------

ISP : netcup GmbH

ASN : AS214996 netcup GmbH

Host : netcup GmbH

Location : Manassas, Virginia (VA)

Country : United States

fio Disk Speed Tests (Mixed R/W 50/50) (Partition /dev/vda4):

---------------------------------

Block Size | 4k (IOPS) | 64k (IOPS)

------ | --- ---- | ---- ----

Read | 55.21 MB/s (13.8k) | 316.72 MB/s (4.9k)

Write | 55.32 MB/s (13.8k) | 318.39 MB/s (4.9k)

Total | 110.54 MB/s (27.6k) | 635.11 MB/s (9.9k)

| |

Block Size | 512k (IOPS) | 1m (IOPS)

------ | --- ---- | ---- ----

Read | 356.02 MB/s (695) | 429.44 MB/s (419)

Write | 374.94 MB/s (732) | 458.04 MB/s (447)

Total | 730.96 MB/s (1.4k) | 887.49 MB/s (866)

iperf3 Network Speed Tests (IPv4):

---------------------------------

Provider | Location (Link) | Send Speed | Recv Speed | Ping

----- | ----- | ---- | ---- | ----

Clouvider | London, UK (10G) | 2.36 Gbits/sec | 1.13 Gbits/sec | 77.0 ms

Eranium | Amsterdam, NL (100G) | 2.52 Gbits/sec | 2.13 Gbits/sec | 98.7 ms

Uztelecom | Tashkent, UZ (10G) | 2.30 Gbits/sec | 1.01 Gbits/sec | 196 ms

Leaseweb | Singapore, SG (10G) | 1.31 Gbits/sec | 625 Mbits/sec | 240 ms

Clouvider | Los Angeles, CA, US (10G) | 2.59 Gbits/sec | 2.02 Gbits/sec | 59.0 ms

Leaseweb | NYC, NY, US (10G) | 2.73 Gbits/sec | 2.24 Gbits/sec | 7.74 ms

Edgoo | Sao Paulo, BR (1G) | 2.18 Gbits/sec | 1.06 Gbits/sec | 126 ms

iperf3 Network Speed Tests (IPv6):

---------------------------------

Provider | Location (Link) | Send Speed | Recv Speed | Ping

----- | ----- | ---- | ---- | ----

Clouvider | London, UK (10G) | 2.35 Gbits/sec | 993 Mbits/sec | 77.0 ms

Eranium | Amsterdam, NL (100G) | 2.48 Gbits/sec | 1.56 Gbits/sec | 98.5 ms

Uztelecom | Tashkent, UZ (10G) | 2.24 Gbits/sec | 943 Mbits/sec | 196 ms

Leaseweb | Singapore, SG (10G) | 706 Mbits/sec | 654 Mbits/sec | 238 ms

Clouvider | Los Angeles, CA, US (10G) | 2.49 Gbits/sec | 1.62 Gbits/sec | 59.0 ms

Leaseweb | NYC, NY, US (10G) | 2.73 Gbits/sec | 2.25 Gbits/sec | 7.67 ms

Edgoo | Sao Paulo, BR (1G) | 2.41 Gbits/sec | 1.11 Gbits/sec | 126 ms

Geekbench 6 Benchmark Test:

---------------------------------

Test | Value

|

Single Core | 328

Multi Core | 1408

Full Test | https://browser.geekbench.com/v6/cpu/15512940

YABS completed in 25 min 51 sec

SiebenG · Dec 11th 2025

Something is really odd with this server in case you don't have any other load on it. I would contact support.

Spoiler: support will ask you to boot server in rescue mode and run yabs there again (just to make sure it's not due to your setup). If you do that now and contact support including the yabs from rescue system, the process will be faster..

hnhanxiii · Dec 15th 2025

I have opened a ticket but it seems the support is going very slow. Do you know there is some places in the control panel or customer panel to view the status of a ticket? At the moment I can only ask them via email.

vdbhb59 · Dec 15th 2025

They do not have any ticket view open to public.

BTW, I just found one more YABS from some user in there with same topology, I am guessing: https://browser.geekbench.com/v6/cpu/15573108

Looks decent to me.

vdbhb59 · Dec 15th 2025

However, I must admit. 9634 is far better. 9645 is not giving any better result. Even with minimal default installation.

See the list and compare yourself: https://browser.geekbench.com/search?q=Netcup

hnhanxiii · Dec 16th 2025

Thanks! I can see other benchmarks also as low as ~350 on single cores in the list you sent.

I booted into rescue mode and run YABS, but the result is the same, even slightly worse. Still no response until now from netcup for my ticket, even though they said the request is being processed...

I'm really considering a refund now. As there is nothing on my server yet, do you think if you refund this one and buy another one, I can still issue refund if the performance of that one is also subpar?

vdbhb59 · Dec 16th 2025

Quote from hnhanxiii

Thanks! I can see other benchmarks also as low as ~350 on single cores in the list you sent.

I booted into rescue mode and run YABS, but the result is the same, even slightly worse. Still no response until now from netcup for my ticket, even though they said the request is being processed...

I'm really considering a refund now. As there is nothing on my server yet, do you think if you refund this one and buy another one, I can still issue refund if the performance of that one is also subpar?

I agree. The newest G12 are giving lower than G11. I had checked myself, and it makes no sense. I am also thinking of giving up the G12 I got. My G11 is better.

For the refund, yes you can even if it is second one. Use the "satisfaction guarantee" in Products > your item > cancellation tab. Though I am not sure how they refund to your original mode of payment. That probably you have to raise via ticket.

**[netcup] Sarah G.** · Dec 16th 2025

Hello hnhanxiii

if you're thinking about getting in touch with our support, we kindly ask you to submit the template below (filled out) with your support request.
It helps us to further investigate.

Quote

Affected customer number:

Affected plan (e.g. RS 1000 G12):

Operating system used (output e.g. of “lsb_release -a”):

Kernel used (output e.g. of “uname -a”):

Observed issue (Slow benchmark / High CPU steal / Low I/O performance):

Observation validated as follows (e.g. Geekbench / observation from top / hdparm):

Issue occurs continuously (yes / no; if no, at which times does it occur more frequently, if known?):

Specific measurement result (e.g. Geekbench / hdparm output, description of observed steal values, if applicable monitoring graphs / measurement values):

Measurement was taken on (date and time):

Why I am dissatisfied with these values (short description of which values would be expected instead):

Display More

Thank you!

King regards
Sarah & the netcup team