AMD, INTC, ARM, 688041.SH, NVDA · US · A-shares · Hong Kong
x86 vs Arm vs RISC-V: status, competition & investable map | 2026
Q1’26 server rev ~52% x86 / ~46% Arm; AI hosts ~60% Arm. Scenario-layered ISA map + investable names. See CPU industry.
Cite a section with a deep link, e.g. /en/r/isa-x86-arm-riscv-2026#thesis
Snapshot (Q1’26 approx)
- x86 server rev share
- ~52% ($63.9B)
- Arm server rev share
- ~45–46%
- AI host Arm vs x86
- ~60% vs ~40%
- RISC-V stage
- Edge scale / DC early
ISA competition deep note (not equity §A). Server revenue mainly IDC Q1’26 via secondary sources. Complements CPU industry deep-dive.
Thesis
ISA competition is scenario-layered, not winner-take-all: x86 still leads general-purpose server/PC units, while Arm approaches half of server revenue via AI racks; RISC-V scales in edge/embedded and custom AI SoCs, still early in the datacenter. Globally: AMD, Arm Holdings, Intel. China: Hygon (x86), Kunpeng/Phytium (Arm), Loongson (own ISA), T-Head/RISC-V IP + foundry chain.
Status by ISA
x86 — enterprise/PC standard; Intel volume base, AMD share gainer. Q1’26 server revenue ~$63.9B / ~52%.
Arm — mobile king; CSP custom CPUs + Nvidia Grace AI hosts. Non-x86 server revenue ~$58.7B; Arm ~45–46% of server revenue; ~60% of AI-host revenue.
RISC-V — open ISA scaling in edge/MCU/custom AI SoCs; datacenter server revenue still tiny; watch vector extensions, T-Head-class cores, CUDA-as-host signals.
Comparison
ISA comparison
| Dimension | x86 | Arm | RISC-V |
|---|---|---|---|
| 商业模式 | Intel/AMD 卖芯片为主 | Arm Holdings 授权+版税；CSP/Nvidia 自研 | 开放 ISA；IP 公司/自研 SoC |
| 软件生态 | Windows/Linux 企业软件最深 | 移动极强；服务器靠云原生/容器加速迁移 | 嵌入式成熟；通用 OS/应用仍追赶 |
| 强势场景 | 企业服务器、PC、传统数据中心 | 手机、AI 机柜主机、CSP 自研云实例 | MCU/IoT、边缘 AI、定制加速 |
| 服务器收入（Q1'26） | 约 $63.9B / ~52% | 约 $56B / ~46%（AI 机柜拉动） | 数据中心收入仍很小 |
| AI 加速服务器主机 | 约 40% 收入份额（AI host） | 约 60%（Grace 等） | 主机角色早期；CUDA host 叙事出现 |
| 能效/定制 | 性能强，能效追赶中 | 能效与定制灵活度高 | 模块化扩展（向量等）最灵活 |
| 地缘/授权风险 | 对华出口与先进制程受限 | 授权与合规敏感 | 开源降低授权卡脖子，生态碎片化风险 |
| 中国映射 | 海光、兆芯 | 鲲鹏、飞腾、此芯等 | 平头哥、赛昉、芯来、香山等 |
Server/AI: revenue shifts faster than units
Arm’s “win” is concentrated in high-ASP AI racks; x86 still dominates non-AI units. Agentic/inference can lift both ISAs — see CPU industry.
China: four parallel paths
x86-compatible (Hygon/Zhaoxin) · Arm (Kunpeng/Phytium) · own ISA (Loongson/Sunway) · RISC-V (T-Head etc.). 2027 SOE replacement window supports volumes; process + software remain ceilings.
Ecosystem moats
Software stack and AI runtime matter as much as ISA. x86 = app compatibility; Arm = mobile+cloud+AI rack; RISC-V = customization vs fragmentation.
Investment map
Investable map
| Tier | Name | Ticker | ISA | Role | Watch |
|---|---|---|---|---|---|
| 全球核心 | AMD | AMD | x86 (+GPU) | 服务器 CPU 份额+AI 第二供应商 | EPYC 份额、MI 系列、ROCm |
| 全球核心 | Arm Holdings | ARM | Arm | 架构迁移的版税/授权杠杆 | v9 授权、版税率、CSP 自研 |
| 全球核心 | Intel | INTC | x86 (+代工) | 出货量底座+Foundry 叙事 | Xeon 份额、制程、代工客户 |
| 全球卫星 | NVIDIA | NVDA | Arm host+GPU | Grace/Vera 定义 Arm AI 机柜 | NVL 出货、CUDA 生态 |
| 全球卫星 | TSMC | TSM | 全架构代工 | 先进制程共同瓶颈/受益 | CoWoS、先进节点产能 |
| 中国核心 | 海光信息 | 688041.SH | x86 兼容 | 金融/电信/商业 DC 国产化主力 | CPU+DCU、集采、制裁 |
| 中国核心 | 龙芯中科 | 688047.SH | LoongArch | 完全自主 ISA，党政军工控 | 生态适配、亏损收窄 |
| 中国主题 | 飞腾/鲲鹏链 | 未上市/华为体系 | Arm | 政务云、运营商集采 | 整机/OS/中间件链 |
| 中国主题 | 平头哥/阿里生态 | 间接（BABA/9988） | RISC-V | 玄铁高性能与边缘/AI | 玄铁性能、出货、CUDA host |
| 中国卫星 | 兆芯/澜起等 | 未上市 / 688008 | x86/配套 | 桌面兼容 / 内存接口 | 信创份额、配套ASP |
Framework: AMD + Arm as global core; Intel as turnaround/hedge; NVDA/TSM as system/process; Hygon/Loongson/Kunpeng-chain/RISC-V themes in China. See on-site equity notes.
Outlook
Near term: Arm/x86 revenue tug-of-war driven by AI CapEx. Medium term: heterogeneous systems; Chiplet blurs pure-ISA stories. China: localization volumes up, gaps remain.
Scenarios
| Scenario | Implication | Lean |
|---|---|---|
| AI boom | Arm revenue share first past half | Arm/NVDA/TSM |
| Enterprise IT rebound | x86 units+ASP | AMD/INTC/Hygon |
| Open-source breakout | RV eats custom tiers | RV IP / T-Head ecosystem |
| Geopolitics tighter | China quad-path accelerates | Hygon/Loongson/Arm CN chain |
Risks
References
- IDC via The Register — https://www.theregister.com/systems/2026/06/16/non-x86-servers-now-nearly-half-the-market-idc-says/5256248
- Tom's Hardware Arm server revenue — https://www.tomshardware.com/desktops/servers/arm-servers-capture-over-45-percent-of-data-center-market-revenue-gpu-clusters-and-high-end-ai-infrastructure-fuel-a-tectonic-shift-away-from-x86
- Next Platform AI-host split — https://www.nextplatform.com/compute/2026/07/30/just-how-rosy-are-those-ai-infrastructure-spending-forecasts/5281473
- TrendForce Agentic AI / server CPU — https://www.trendforce.com/research/download/RP260615CQ3
- RISC-V Market Analysis 2026 PDF — https://theshdgroup.com/wp-content/uploads/2026/04/RISC-V-Market-Analysis-2026-Final-abridged.pdf
- China CPU multi-path (ChinaIRN) — https://www.chinairn.com/scfx/20260624/115240651.shtml
- Domestic CPU quadrant coverage — https://www.163.com/dy/article/KVIG93B805319LH8.html
- On-site: CPU industry · AMD · Intel · NVIDIA
Not investment advice. Shares via secondary IDC prints; unlisted names have no public price.