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Qualcomm’s MSM8960 mattered because it brought together two advances that early LTE smartphones needed: a faster custom CPU design and a multimode LTE modem integrated into the same 28 nm system-on-chip. Announced in 2011 and used in phones from 2012, it paired two Krait CPU cores with Adreno 225 graphics and a broad set of cellular and multimedia functions. It was not just a processor, and Qualcomm’s launch claims should not be confused with results from every retail phone.
What MSM8960 was
MSM8960 was a dual-core member of Qualcomm’s Snapdragon S4 family. The distinctions matter: Krait was Qualcomm’s custom CPU microarchitecture; Snapdragon S4 was a family of mobile platforms; and MSM8960 was one particular system-on-chip (SoC) in that family. Other S4 chips had different configurations, so “Snapdragon S4” does not by itself identify an MSM8960 device.
The MSM8960 combined two Krait CPU cores, an Adreno 225 GPU, a memory system, multimedia and signal-processing hardware, and a multimode cellular modem. Qualcomm announced the platform on February 13, 2011, with products expected to arrive from early 2012. Qualcomm’s announcement described the broader S4 family as a 28 nm generation with Krait CPUs and integrated LTE; the exact capabilities and clocks depended on the chip and device.
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Krait: Qualcomm’s move beyond Scorpion
Krait was Qualcomm’s internally designed CPU implementing the ARM instruction-set environment of its time. It was not an ARM Cortex-A9 core used unchanged. It followed Qualcomm’s earlier Scorpion design and aimed to do more useful work per core, rather than relying on core count or clock speed alone.
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Later technical coverage commonly describes the early MSM8960 implementation as Krait v2 or Krait 200, although Qualcomm’s original launch materials generally called it Krait. Krait was an out-of-order design: when one instruction had to wait for data, the processor could execute other ready instructions rather than simply sitting idle. Its wider instruction and execution resources, stronger floating-point capability, and improved cache and memory interface helped expose more instruction-level parallelism. These changes could improve responsiveness in browsers and applications that did not use many threads. Later analysis of Krait revisions also makes clear that Krait 200, 300, and 400 were successive versions, not identical cores.
Qualcomm said the new architecture could deliver up to 150% higher performance and 65% lower power than a prior generation of ARM-based CPU cores. Those were company claims based on Qualcomm’s comparisons, not universal measurements across phones or workloads. The broader family’s advertised “up to 2.5 GHz” was likewise not the standard operating speed of MSM8960 phones. Development platforms and many retail implementations ran around 1.5 GHz, with actual clocks varying by model.
Inside the SoC: CPU, graphics, modem and media
Thinking of MSM8960 as a miniature mobile platform is more accurate than treating it as a CPU with a modem attached. Its main pieces worked together:
- CPU: two Qualcomm Krait cores for operating-system, application and other general-purpose work.
- GPU: Adreno 225 for graphics and compute tasks supported by its generation of drivers and APIs.
- Memory: a dual-channel LPDDR interface, intended to move data between the processor, graphics and memory efficiently.
- Cellular: an integrated multimode baseband supporting LTE and several 2G and 3G standards.
- Dedicated platform hardware: video, camera, audio, security and display functions that could handle specific tasks without sending all work through the CPU.
- Connectivity and location: S4 platform materials list WLAN, Bluetooth, GPS and FM functions. A phone still needed appropriate external radio-frequency and other components to make its particular configuration work.
Qualcomm’s S4 white paper and product brief describe capabilities across the S4 platform. Their family-level figures—including support for 1080p-class video, cameras up to 20 megapixels, HDMI 1.4, USB 2.0 OTG, secure boot and TrustZone-related features—should not be read as a guarantee that every MSM8960 phone implemented every feature. OEM camera pipelines, firmware, connectors and product choices determined what a particular device could do.
Why 28 nm mattered—and what it did not guarantee
Moving to 28 nm gave Qualcomm a denser process generation than earlier mobile chips, with potential benefits for leakage, transistor density and clock headroom. It also helped make a capable application processor and LTE modem practical within a mobile platform’s space and power constraints. Qualcomm presented S4 as a lower-power, thermally improved generation, but a process node alone cannot promise longer battery life or a cooler phone.
Real power use depended on the chip’s implementation and workload as well as the display, battery capacity, radio conditions, software, cooling and thermal limits. Process labels are not perfectly comparable across foundries or process variants, either. In a phone, a weak cellular signal or power-hungry screen could outweigh an SoC efficiency gain.
Adreno 225: a faster step in an older graphics lineage
Adreno 225 was the GPU most closely associated with MSM8960. It evolved the Adreno 2xx lineage rather than introducing an entirely new graphics architecture. AnandTech reported approximate operating frequencies of 266 MHz for Adreno 220 and 400 MHz for Adreno 225, alongside driver improvements; Qualcomm projected roughly 50% more performance than Adreno 220. That estimate was not a promise of the same gain in every game.
The GPU belonged to the Direct3D feature level 9_3 and OpenGL ES 2.0 era, not the modern Vulkan or later OpenGL ES feature set. Graphics results varied with resolution, memory bandwidth, drivers, thermal conditions and the workload. Qualcomm also promoted comparisons with Apple’s A5 in particular GLBenchmark conditions; that is a benchmark-specific claim, not proof that Adreno 225 was faster in every graphics task. AnandTech’s analysis of Adreno 225 discusses the GPU in that historical context.
Integrated LTE: the platform’s commercial advantage
In early LTE phones, the cellular modem could be a separate chip from the application processor. MSM8960’s key integration step was putting a multimode LTE modem into the SoC alongside the CPU and graphics. This could simplify a device’s board and platform design and potentially improve power use and cost compared with a two-chip arrangement.
Its modem supported LTE FDD and TDD, as well as UMTS/DC-HSPA+, CDMA2000/EV-DO, GSM/GPRS/EDGE and TD-SCDMA configurations. AnandTech reported the following theoretical peak rates for the modem:
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| Radio standard | Reported peak rate |
|---|---|
| LTE FDD, Category 3 | Up to 100 Mbps downlink / 50 Mbps uplink |
| LTE TDD, Category 3 | Up to 68 Mbps downlink / 17 Mbps uplink |
| UMTS/DC-HSPA+ | Up to 42 Mbps downlink / 11 Mbps uplink |
| CDMA2000/EV-DO Rev. B | Up to 14.7 Mbps downlink / 5.4 Mbps uplink |
| GSM/GPRS/EDGE and TD-SCDMA | Supported, with rates depending on the standard and implementation |
These are theoretical modem-category figures, not expected everyday speeds. Coverage, spectrum, signal strength, congestion and carrier deployment all affect throughput. This was an early LTE generation without modern carrier-aggregation capabilities. Nor did “integrated LTE” mean that the entire radio was on the SoC: external RF and transceiver components were still required. AnandTech’s connectivity analysis covers the modem and its limits.
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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteTwo Krait cores versus four Cortex-A9 cores
MSM8960 was often compared with Nvidia’s quad-core Tegra 3. The comparison exposed why “four cores must be faster than two” was a poor rule for phones. Many applications of the period ran mainly on one thread or used only a few threads. For those tasks, Krait’s stronger per-core performance could matter more than Tegra 3’s extra cores. Dedicated video hardware also meant that some media work did not scale with CPU core count.
Tegra 3 could benefit when software divided its work effectively across four cores, including in some multithreaded synthetic benchmarks. Its companion-core design was also intended to reduce power in light-load or idle situations. The result depended on the task: Krait was particularly competitive in single-threaded and lightly threaded work, while a well-parallelized workload could use Tegra 3’s additional cores. AnandTech’s comparison cautioned against treating either core count or one benchmark as a universal verdict.
What the benchmarks can—and cannot—tell us
Independent testing of an MSM8960 development platform showed why the chip attracted attention: its two Krait cores delivered strong per-core performance for the period, including in comparisons with Tegra 3. Results across CPU single-thread, multithread, browser and JavaScript tests did not all point in the same direction; workload scaling mattered. GPU tests added further complications because resolution and driver behavior could change the ranking.
The development platform was not a retail phone. AnandTech noted that its CPU governor used ondemand frequency scaling rather than holding the processor permanently at maximum clock. Shipping devices could differ in clocks, firmware, cooling, display resolution, memory and carrier software, all of which affect scores and sustained performance. Benchmark results are therefore historical evidence about a configuration and test, not a timeless ranking of the chips in every phone.
Devices: why the exact regional model matters
MSM8960 appeared in several important 2012-era LTE products, but device names are not enough to identify the silicon. North American LTE versions of HTC’s One X family—sold under One X or One XL branding depending on market—used Qualcomm’s dual-core S4 platform, while the international HTC One X in many markets used Nvidia Tegra 3. Qualcomm-based Galaxy S III variants were sold by selected carriers and in selected regions; other versions used different processors. Some Nokia Lumia devices also used MSM8960-class S4 platforms, depending on model and market.
Check the full model number and region when researching a phone. The S4 family included multiple SoCs, among them MSM8930 and APQ8064, so S4 branding alone does not establish that a device contains MSM8960. Qualcomm’s later product announcements show how broad the family was: the November 2011 lineup covered distinct chips and tiers.
Where MSM8960 sat in the S4 generation
MSM8960 was a dual-core S4 platform often identified with S4 Plus products. It should not be confused with the later Snapdragon S4 Pro/APQ8064, which used a different quad-core configuration and Adreno 320 graphics. Nor should it be treated as equivalent to MSM8960Pro, which used a later Krait revision in some implementations. Qualcomm’s S4 lineup quickly expanded, and subsequent Krait revisions, GPUs and modem generations moved beyond the original MSM8960. Coverage of APQ8064 illustrates how different the S4 Pro configuration was.
In retrospect, MSM8960’s significance was not that it remained competitive indefinitely. It was that Qualcomm combined a high-throughput custom CPU, a contemporary graphics core, 28 nm manufacturing and multimode LTE integration at a moment when manufacturers were working to make LTE smartphones less complex and more capable. Its two-core design could excel in common lightly threaded work, but its age, graphics API support, modem category and workload limits are unmistakably those of the 2011–2012 generation.
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