Benchmark #77247 - pibenchmarks.com

Brand: SKHynix PC401
SSD (M.2 NVMe)
#293 / 1,677
47
#142 / 1,677
#142 / 984
#134 / 281
35,157
	Amazon.com

Overview
2024-01-09 04:30:33
#77,247
27,923
-7,234 (-25.91%)
Del
SK hynix PC401 NVMe Solid State Drive 256GB on Pimoroni PCIE adapter

Storage Details
SKHynix PC401
SSD (M.2 NVMe)
238G
SSD
SKHynix
PC401NVMeSK256GB
None

System Board Details
		Amazon.com AliExpress
Raspberry Pi 5B 1.0
Raspberry Pi 5 Model B Rev 1.0
Raspberry Pi Foundation
N/A
4
2,400
910 (+10)
2,133

Operating System

Ubuntu 23.10
aarch64

Benchmark Results
212 MB/s
370.65 MB/s
373.06 MB/s
48,301 IOPS
96,150 IOPS
193,207 KB/s
384,600 KB/s
140,315 KB/s
103,658 KB/s
46,993 KB/s
127,571 KB/s

inxi Results
System: Kernel: 6.5.0-1008-raspi arch: aarch64 bits: 64 compiler: N/A clocksource: arch_sys_counter parameters: coherent_pool=1M 8250.nr_uarts=1 pci=pcie_bus_safe snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 smsc95xx.macaddr=XX:XX:XX:XX:XX:XX vc_mem.mem_base=0x3fc00000 vc_mem.mem_size=0x40000000 zswap.enabled=1 zswap.zpool=z3fold zswap.compressor=zstd multipath=off dwc_otg.lpm_enable=0 console=tty1 root=LABEL=writable rootfstype=ext4 rootwait fixrtc quiet splash Console: N/A DM: GDM3 v: 45.beta Distro: Ubuntu 23.10 (Mantic Minotaur) Machine: Type: ARM System: Raspberry Pi 5 Model B Rev 1.0 details: BCM2835 rev: d04170 Battery: Message: No system battery data found. Is one present? Memory: System RAM: total: 8 GiB available: 7.75 GiB used: 1.03 GiB (13.3%) igpu: 8 MiB RAM Report: smbios: No SMBIOS data for dmidecode to process PCI Slots: Message: No ARM data found for this feature. CPU: Info: model: N/A variant: cortex-a76 bits: 64 type: MCP arch: ARMv8 family: 8 model-id: 4 stepping: 1 Topology: cpus: 1x cores: 4 smt: N/A cache: N/A Speed (MHz): avg: 1500 min/max: 1500/2400 scaling: driver: cpufreq-dt governor: ondemand cores: 1: 1500 2: 1500 3: 1500 4: 1500 bogomips: 432 Features: aes asimd asimddp asimdhp asimdrdm atomics cpuid crc32 dcpop evtstrm fp fphp lrcpc pmull sha1 sha2 Vulnerabilities: Type: gather_data_sampling status: Not affected Type: itlb_multihit status: Not affected Type: l1tf status: Not affected Type: mds status: Not affected Type: meltdown status: Not affected Type: mmio_stale_data status: Not affected Type: retbleed status: Not affected Type: spec_rstack_overflow status: Not affected Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via prctl Type: spectre_v1 mitigation: __user pointer sanitization Type: spectre_v2 mitigation: CSV2, BHB Type: srbds status: Not affected Type: tsx_async_abort status: Not affected Graphics: Device-1: bcm2712-hdmi0 driver: vc4_hdmi v: N/A bus-ID: N/A chip-ID: brcm:107c701400 class-ID: hdmi Device-2: bcm2712-hdmi1 driver: vc4_hdmi v: N/A bus-ID: N/A chip-ID: brcm:107c706400 class-ID: hdmi Display: server: X.org v: 1.21.X.X with: Xwayland v: 23.2.0 compositor: gnome-shell driver: X: loaded: fbdev gpu: vc4-drm,vc4_crtc,vc4_dpi,vc4_dsi,vc4_firmware_kms,vc4_hdmi,vc4_hvs,vc4_txp,vc4_v3d,vc4_vec tty: 80x40 Monitor-1: HDMI-A-1 model: Lenovo LEN T27q-20 built: 2022 res: 2560x1440 dpi: 109 gamma: 1.2 chroma: red: x: 0.639 y: 0.329 green: x: 0.298 y: 0.600 blue: x: 0.149 y: 0.059 white: x: 0.314 y: 0.329 size: 597x336mm (23.5x13.23") diag: 685mm (27") ratio: 16:9 modes: 2560x1440, 1920x1200, 1920x1080, 1920x1080i, 1680x1050, 1600x900, 1280x1024, 1440x900, 1152x864, 1280x720, 1024x768, 800x600, 720x576, 720x576i, 720x480, 720x480i, 640x480, 720x400 API: OpenGL Message: GL data unavailable in console, glxinfo missing. Audio: Device-1: bcm2712-hdmi0 driver: vc4_hdmi bus-ID: N/A chip-ID: brcm:107c701400 class-ID: hdmi Device-2: bcm2712-hdmi1 driver: vc4_hdmi bus-ID: N/A chip-ID: brcm:107c706400 class-ID: hdmi API: ALSA v: k6.5.0-1008-raspi status: kernel-api tools: alsactl,alsamixer,amixer Server-1: PipeWire v: 0.3.79 status: n/a (root, process) with: 1: pipewire-pulse status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin tools: pw-cat,pw-cli,wpctl Network: Device-1: driver: rp1 v: N/A port: N/A bus-ID: 0001:01:00.0 chip-ID: 1de4:0001 class-ID: 0200 IF: wlan0 state: up mac: IP v4: type: dynamic noprefixroute scope: global broadcast: IP v6: type: temporary dynamic scope: global IP v6: type: dynamic mngtmpaddr noprefixroute scope: global IP v6: type: noprefixroute scope: link IF-ID-1: eth0 state: down mac: WAN IP: Bluetooth: Device-1: bcm7271-uart driver: bcm7271_uart bus-ID: N/A chip-ID: brcm:107d50c000 class-ID: serial Report: hciconfig ID: hci0 rfk-id: 0 state: up address: bt-v: 5.0 lmp-v: 9 sub-v: 6119 hci-v: 9 rev: 17e class-ID: 6c0000 Info: acl-mtu: 1021:8 sco-mtu: 64:1 link-policy: rswitch sniff link-mode: peripheral accept service-classes: rendering, capturing, audio, telephony Device-2: bcm7271-uart driver: N/A bus-ID: N/A chip-ID: brcm:serial0 class-ID: serial Logical: Message: No logical block device data found. RAID: Message: No RAID data found. Drives: Local Storage: total: 715.97 GiB used: 7.37 GiB (1.0%) ID-1: /dev/mmcblk0 maj-min: 179:0 model: FF8S9 size: 477.5 GiB block-size: physical: 512 B logical: 512 B tech: SSD scheme: MBR SMART Message: Unknown smartctl error. Unable to generate data. ID-2: /dev/nvme0n1 maj-min: 259:0 vendor: SK Hynix model: PC401 NVMe 256GB size: 238.47 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s lanes: 4 tech: SSD fw-rev: 80006E00 temp: 46.9 C scheme: MBR SMART: yes health: PASSED on: 16d 20h cycles: 499 read-units: 3,884,781 [1.98 TB] written-units: 4,815,598 [2.46 TB] Message: No optical or floppy data found. Partition: ID-1: / raw-size: 237.97 GiB size: 234.12 GiB (98.38%) used: 7.27 GiB (3.1%) fs: ext4 block-size: 4096 B dev: /dev/nvme0n1p2 maj-min: 259:2 label: writable uuid: 4106d6da-14ec-4cc5-a35b-62796617f5f4 ID-2: /boot/firmware raw-size: 512 MiB size: 504.1 MiB (98.46%) used: 105.7 MiB (21.0%) fs: vfat block-size: 512 B dev: /dev/nvme0n1p1 maj-min: 259:1 label: system-boot uuid: A618-CDE5 Swap: Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: yes compressor: zstd max-pool: 20% ID-1: swap-1 type: file size: 1024 MiB used: 0 KiB (0.0%) priority: -2 file: /swapfile Unmounted: ID-1: /dev/mmcblk0p1 maj-min: 179:1 size: 512 MiB fs: vfat label: bootfs uuid: D3E6-3F09 ID-2: /dev/mmcblk0p2 maj-min: 179:2 size: 477 GiB fs: ext4 label: rootfs uuid: cb6f0e18-5add-4177-ab98-e9f0235e06b3 USB: Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 1 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002 class-ID: 0900 Hub-2: 2-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002 class-ID: 0900 Device-1: 2-2:2 info: Chicony USB Wireless HID Receiver type: keyboard,HID,mouse driver: hid-generic,usbhid interfaces: 4 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 100mA chip-ID: 04f2:1338 class-ID: 0300 Hub-3: 3-0:1 info: super-speed hub ports: 1 rev: 3.0 speed: 5 Gb/s (596.0 MiB/s) lanes: 1 mode: 3.2 gen-1x1 chip-ID: 1d6b:0003 class-ID: 0900 Hub-4: 4-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002 class-ID: 0900 Device-1: 4-2:2 info: Chicony USB Wireless HID Receiver type: keyboard,HID,mouse driver: hid-generic,usbhid interfaces: 4 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 100mA chip-ID: 04f2:1338 class-ID: 0300 Hub-5: 5-0:1 info: super-speed hub ports: 1 rev: 3.0 speed: 5 Gb/s (596.0 MiB/s) lanes: 1 mode: 3.2 gen-1x1 chip-ID: 1d6b:0003 class-ID: 0900 Sensors: Src: /sys System Temperatures: cpu: 51.8 C mobo: N/A Fan Speeds (rpm): cpu: 2689 Repos: Packages: 1663 pm: dpkg pkgs: 1654 libs: 866 tools: apt,apt-get pm: snap pkgs: 9 Active apt repos in: /etc/apt/sources.list 1: deb http: //ports.ubuntu.com/ubuntu-ports mantic main restricted universe multiverse 2: deb http: //ports.ubuntu.com/ubuntu-ports/ mantic-updates main restricted universe multiverse 3: deb http: //ports.ubuntu.com/ubuntu-ports/ mantic-security main restricted universe multiverse Processes: CPU top: 5 of 282 1: cpu: 2.1% command: fwupd pid: 3720 mem: 32.7 MiB (0.4%) 2: cpu: 1.0% command: snapd pid: 784 mem: 31.2 MiB (0.3%) 3: cpu: 1.0% command: gnome-shell pid: 1234 mem: 186.1 MiB (2.3%) 4: cpu: 0.7% command: init pid: 1 mem: 14.1 MiB (0.1%) 5: cpu: 0.3% command: ibus-extension-gtk3 pid: 2249 mem: 26.4 MiB (0.3%) Memory top: 5 of 282 1: mem: 186.1 MiB (2.3%) command: gnome-shell pid: 1234 cpu: 1.0% 2: mem: 91.6 MiB (1.1%) command: xdg-desktop-portal-gnome pid: 2431 cpu: 0.0% 3: mem: 80.6 MiB (1.0%) command: xtigervnc pid: 1187 cpu: 0.0% 4: mem: 76.8 MiB (0.9%) command: mutter-x11-frames pid: 1906 cpu: 0.0% 5: mem: 74.5 MiB (0.9%) command: xwayland pid: 1561 cpu: 0.0% Info: Processes: 282 Uptime: 12m Init: systemd v: 253 target: graphical (5) default: graphical tool: systemctl Compilers: N/A Client: shell wrapper v: 5.2.15-release inxi: 3.3.31

inxi Results

System:
  Kernel: 6.5.0-1008-raspi arch: aarch64 bits: 64 compiler: N/A clocksource: arch_sys_counter
    parameters: coherent_pool=1M 8250.nr_uarts=1 pci=pcie_bus_safe snd_bcm2835.enable_compat_alsa=0
    snd_bcm2835.enable_hdmi=1 smsc95xx.macaddr=XX:XX:XX:XX:XX:XX vc_mem.mem_base=0x3fc00000
    vc_mem.mem_size=0x40000000 zswap.enabled=1 zswap.zpool=z3fold zswap.compressor=zstd
    multipath=off dwc_otg.lpm_enable=0 console=tty1 root=LABEL=writable rootfstype=ext4 rootwait
    fixrtc quiet splash
  Console: N/A DM: GDM3 v: 45.beta Distro: Ubuntu 23.10 (Mantic Minotaur)
Machine:
  Type: ARM System: Raspberry Pi 5 Model B Rev 1.0 details: BCM2835 rev: d04170 Battery:
  Message: No system battery data found. Is one present?
Memory:
  System RAM: total: 8 GiB available: 7.75 GiB used: 1.03 GiB (13.3%) igpu: 8 MiB
  RAM Report: smbios: No SMBIOS data for dmidecode to process
PCI Slots:
  Message: No ARM data found for this feature.
CPU:
  Info: model: N/A variant: cortex-a76 bits: 64 type: MCP arch: ARMv8 family: 8 model-id: 4
    stepping: 1
  Topology: cpus: 1x cores: 4 smt: N/A cache: N/A
  Speed (MHz): avg: 1500 min/max: 1500/2400 scaling: driver: cpufreq-dt governor: ondemand cores:
    1: 1500 2: 1500 3: 1500 4: 1500 bogomips: 432
  Features: aes asimd asimddp asimdhp asimdrdm atomics cpuid crc32 dcpop evtstrm fp fphp lrcpc
    pmull sha1 sha2
  Vulnerabilities:
  Type: gather_data_sampling status: Not affected
  Type: itlb_multihit status: Not affected
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: mmio_stale_data status: Not affected
  Type: retbleed status: Not affected
  Type: spec_rstack_overflow status: Not affected
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via prctl
  Type: spectre_v1 mitigation: __user pointer sanitization
  Type: spectre_v2 mitigation: CSV2, BHB
  Type: srbds status: Not affected
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: bcm2712-hdmi0 driver: vc4_hdmi v: N/A bus-ID: N/A chip-ID: brcm:107c701400
    class-ID: hdmi
  Device-2: bcm2712-hdmi1 driver: vc4_hdmi v: N/A bus-ID: N/A chip-ID: brcm:107c706400
    class-ID: hdmi
  Display: server: X.org v: 1.21.X.X with: Xwayland v: 23.2.0 compositor: gnome-shell driver: X:
    loaded: fbdev
    gpu: vc4-drm,vc4_crtc,vc4_dpi,vc4_dsi,vc4_firmware_kms,vc4_hdmi,vc4_hvs,vc4_txp,vc4_v3d,vc4_vec
    tty: 80x40
  Monitor-1: HDMI-A-1 model: Lenovo LEN T27q-20 built: 2022 res: 2560x1440
    dpi: 109 gamma: 1.2 chroma: red: x: 0.639 y: 0.329 green: x: 0.298 y: 0.600 blue: x: 0.149
    y: 0.059 white: x: 0.314 y: 0.329 size: 597x336mm (23.5x13.23") diag: 685mm (27") ratio: 16:9
    modes: 2560x1440, 1920x1200, 1920x1080, 1920x1080i, 1680x1050, 1600x900, 1280x1024, 1440x900,
    1152x864, 1280x720, 1024x768, 800x600, 720x576, 720x576i, 720x480, 720x480i, 640x480, 720x400
  API: OpenGL Message: GL data unavailable in console, glxinfo missing.
Audio:
  Device-1: bcm2712-hdmi0 driver: vc4_hdmi bus-ID: N/A chip-ID: brcm:107c701400 class-ID: hdmi
  Device-2: bcm2712-hdmi1 driver: vc4_hdmi bus-ID: N/A chip-ID: brcm:107c706400 class-ID: hdmi
  API: ALSA v: k6.5.0-1008-raspi status: kernel-api tools: alsactl,alsamixer,amixer
  Server-1: PipeWire v: 0.3.79 status: n/a (root, process) with: 1: pipewire-pulse status: active
    2: wireplumber status: active 3: pipewire-alsa type: plugin tools: pw-cat,pw-cli,wpctl
Network:
  Device-1: driver: rp1 v: N/A port: N/A bus-ID: 0001:01:00.0 chip-ID: 1de4:0001 class-ID: 0200
  IF: wlan0 state: up mac: 
  IP v4:  type: dynamic noprefixroute scope: global broadcast: 
  IP v6:  type: temporary dynamic scope: global
  IP v6:  type: dynamic mngtmpaddr noprefixroute scope: global
  IP v6:  type: noprefixroute scope: link
  IF-ID-1: eth0 state: down mac: 
  WAN IP: 
Bluetooth:
  Device-1: bcm7271-uart driver: bcm7271_uart bus-ID: N/A chip-ID: brcm:107d50c000 class-ID: serial
  Report: hciconfig ID: hci0 rfk-id: 0 state: up address:  bt-v: 5.0 lmp-v: 9 sub-v: 6119
    hci-v: 9 rev: 17e class-ID: 6c0000
  Info: acl-mtu: 1021:8 sco-mtu: 64:1 link-policy: rswitch sniff link-mode: peripheral accept
    service-classes: rendering, capturing, audio, telephony
  Device-2: bcm7271-uart driver: N/A bus-ID: N/A chip-ID: brcm:serial0 class-ID: serial
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 715.97 GiB used: 7.37 GiB (1.0%)
  ID-1: /dev/mmcblk0 maj-min: 179:0 model: FF8S9 size: 477.5 GiB block-size: physical: 512 B
    logical: 512 B tech: SSD scheme: MBR
  SMART Message: Unknown smartctl error. Unable to generate data.
  ID-2: /dev/nvme0n1 maj-min: 259:0 vendor: SK Hynix model: PC401 NVMe 256GB size: 238.47 GiB
    block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s lanes: 4 tech: SSD fw-rev: 80006E00 temp: 46.9 C scheme: MBR
  SMART: yes health: PASSED on: 16d 20h cycles: 499 read-units: 3,884,781 [1.98 TB]
    written-units: 4,815,598 [2.46 TB]
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 237.97 GiB size: 234.12 GiB (98.38%) used: 7.27 GiB (3.1%) fs: ext4
    block-size: 4096 B dev: /dev/nvme0n1p2 maj-min: 259:2 label: writable
    uuid: 4106d6da-14ec-4cc5-a35b-62796617f5f4
  ID-2: /boot/firmware raw-size: 512 MiB size: 504.1 MiB (98.46%) used: 105.7 MiB (21.0%)
    fs: vfat block-size: 512 B dev: /dev/nvme0n1p1 maj-min: 259:1 label: system-boot uuid: A618-CDE5
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: yes compressor: zstd
    max-pool: 20%
  ID-1: swap-1 type: file size: 1024 MiB used: 0 KiB (0.0%) priority: -2 file: /swapfile
Unmounted:
  ID-1: /dev/mmcblk0p1 maj-min: 179:1 size: 512 MiB fs: vfat label: bootfs uuid: D3E6-3F09
  ID-2: /dev/mmcblk0p2 maj-min: 179:2 size: 477 GiB fs: ext4 label: rootfs
    uuid: cb6f0e18-5add-4177-ab98-e9f0235e06b3
USB:
  Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 1 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s)
    lanes: 1 mode: 2.0 chip-ID: 1d6b:0002 class-ID: 0900
  Hub-2: 2-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s)
    lanes: 1 mode: 2.0 chip-ID: 1d6b:0002 class-ID: 0900
  Device-1: 2-2:2 info: Chicony USB Wireless HID Receiver type: keyboard,HID,mouse
    driver: hid-generic,usbhid interfaces: 4 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1
    power: 100mA chip-ID: 04f2:1338 class-ID: 0300
  Hub-3: 3-0:1 info: super-speed hub ports: 1 rev: 3.0 speed: 5 Gb/s (596.0 MiB/s) lanes: 1
    mode: 3.2 gen-1x1 chip-ID: 1d6b:0003 class-ID: 0900
  Hub-4: 4-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s)
    lanes: 1 mode: 2.0 chip-ID: 1d6b:0002 class-ID: 0900
  Device-1: 4-2:2 info: Chicony USB Wireless HID Receiver type: keyboard,HID,mouse
    driver: hid-generic,usbhid interfaces: 4 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1
    power: 100mA chip-ID: 04f2:1338 class-ID: 0300
  Hub-5: 5-0:1 info: super-speed hub ports: 1 rev: 3.0 speed: 5 Gb/s (596.0 MiB/s) lanes: 1
    mode: 3.2 gen-1x1 chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
  Src: /sys System Temperatures: cpu: 51.8 C mobo: N/A
  Fan Speeds (rpm): cpu: 2689
Repos:
  Packages: 1663 pm: dpkg pkgs: 1654 libs: 866 tools: apt,apt-get pm: snap pkgs: 9
  Active apt repos in: /etc/apt/sources.list
    1: deb http: //ports.ubuntu.com/ubuntu-ports mantic main restricted universe multiverse
    2: deb http: //ports.ubuntu.com/ubuntu-ports/ mantic-updates main restricted universe multiverse
    3: deb http: //ports.ubuntu.com/ubuntu-ports/ mantic-security main restricted universe multiverse
Processes:
  CPU top: 5 of 282
  1: cpu: 2.1% command: fwupd pid: 3720 mem: 32.7 MiB (0.4%)
  2: cpu: 1.0% command: snapd pid: 784 mem: 31.2 MiB (0.3%)
  3: cpu: 1.0% command: gnome-shell pid: 1234 mem: 186.1 MiB (2.3%)
  4: cpu: 0.7% command: init pid: 1 mem: 14.1 MiB (0.1%)
  5: cpu: 0.3% command: ibus-extension-gtk3 pid: 2249 mem: 26.4 MiB (0.3%)
  Memory top: 5 of 282
  1: mem: 186.1 MiB (2.3%) command: gnome-shell pid: 1234 cpu: 1.0%
  2: mem: 91.6 MiB (1.1%) command: xdg-desktop-portal-gnome pid: 2431 cpu: 0.0%
  3: mem: 80.6 MiB (1.0%) command: xtigervnc pid: 1187 cpu: 0.0%
  4: mem: 76.8 MiB (0.9%) command: mutter-x11-frames pid: 1906 cpu: 0.0%
  5: mem: 74.5 MiB (0.9%) command: xwayland pid: 1561 cpu: 0.0%
Info:
  Processes: 282 Uptime: 12m Init: systemd v: 253 target: graphical (5) default: graphical
  tool: systemctl Compilers: N/A Client: shell wrapper v: 5.2.15-release inxi: 3.3.31

Benchmark #77247 - Brand: SKHynix PC401