New model! High-performance business mini-tower workstation for up to two monitors:
Intel UHD Graphics 630 graphics · Optional sound-damped silent case or short-depth 4U rackmount case
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New 9th Generation Intel Core processors!Stratosphere Express U2 features new 9th generation Intel Core processors. See the primer that follows to learn more about key terms such as CPU cores, threads, clock speed and Turbo Boost. You may configure your Stratosphere Express U2 system with any of the CPUs below.
Intel Core i5 (9th Gen)
Modern multi-core CPUs split up your computer's tasks across a team of processors that work in parallel, like a team of horses. Two horses are better than one; four are better than two; the more horsepower, the better. For CPUs, your workhorses are etched in silicon all within a single chip, and we call those workers CPU cores. Of course, CPUs don't always run in one direction like a team of horses. Think of CPU cores as a team of cooks in a central kitchen, with CPU threads being the waiters bringing in orders (instructions) and returning with cooked (processed) food. A kitchen's productivity is thus roughly equal to the number of cooks and the speed of each cook. For CPUs we call that speed the clock speed of each core, which can vary independently during operation. CPU clocks are measured in GHz (gigahertz), so a 3GHz CPU is operating at three billion cycles per second. Cores act as a multiplier to clock speed, since the cores work independently, and each core also executes multiple instructions in parallel. You'll notice that CPU clock speed is often expressed as a range. The low number, or base clock speed, is the guaranteed minimum speed of all cores. The high number is Intel Turbo Boost: the peak clock speed that one or several cores can achieve for a limited period without overheating the CPU. Intel CPUs with Turbo Boost will automatically increase the speed of individual cores to process demanding threads to the fastest extent possible without crossing thermal limits or exceeding the preset Turbo Boost limit. Each CPU core independently executes operating system requests and is addressed as a separate CPU. This is a bit like having a a dedicated waiter for each cook in the kitchen. However, when a cook handles two waiters' orders simultaneously, he's more productive. Now the restaurant can serve more customers at the same time, simply by hiring more waiters.  A team of cooks: which ones are virtual? In the same way, Intel CPUs with Hyper-Threading Technology can process two software threads simultaneously by presenting two logical CPUs to the operating system for each physical core. Faking extra CPU cores is a workload management technique, so a CPU core can keep working even if a thread is waiting for external data or is stalled. Hyper-Threading is like having two waiters available for the same cook. Other waiters may be too busy to take your order, but this waiter is available, and then so is the actual cook. Just as a team of cooks is more productive with twice the wait staff serving the demands of patrons, Hyper-Threading enables CPU cores to process more threads by working around bottlenecks and resource hogs. Waiters serve as workload managers for the cooks, and so does Hyper-Threading for CPUs. Intel's 9th Generation Core processors unleash faster performance than ever, with faster clock speeds, more cores, more virtual cores (measured by thread count), and more performance per dollar. At the top of line, Intel Core i9 processors deliver 8 CPU cores processing 16 simultaneous threads, at record stock clock speeds up to 5GHz. One rung down, 9th Gen Intel Core i7 processors also include 8 CPU cores for the first time, while not offering Hyper-Threading. The very successful 8th Gen Core i7 series (Core i7-8700) follows one further rung down in performance, with 6 CPU cores handling 12 simultaneous threads. Meanwhile, affordable 9th Gen Intel Core i5 CPUs reach new highs in peak clock speed for this affordable price point while still delivering an impressive six CPU cores. Finally, 9th Gen Core i3 processors deliver great quad-core performance for a fraction of the price that this performance cost only a few years ago. With more cores and more simultaneous threads, more work can be done in parallel, enabling smoother multitasking, more responsive financial trading indicators, and even faster web browsing when many tabs are open. There's a 9th Gen Intel Core processor to meet every requirement and budget. Choose yours by customizing Stratosphere Express U2 and pricing your complete configuration today! Q: Why do some Intel CPU names end with K, F or KF?A: Intel uses the K suffix to designate "unlocked" CPUs, of particular interest to gamers and overclockers. Overclocking enthusiasts run these CPUs at higher clock speeds than Intel guarantees, typically aided by liquid cooling, and typically with the goal of running games faster. However, K-series CPUs also ship with a faster base clock and Turbo Boost than non-K sibling models. These faster clock speeds are guaranteed by Intel without resorting to overclocking, so K-series CPUs naturally appeal to any power user looking for better performance. Intel recently started shipping F-series CPUs, which have their internal graphics subsystem (Intel UHD Graphics 630) permanently disabled. F-series CPUs are used on systems with discrete graphics cards, which are the vast majority of the systems we sell. F-series CPUs are helping relieve supply constraints (inadequate manufacturing yields) on many standard Intel CPUs in the past year, which have caused order fulfillment delays across the industry. PassMark CPU Mark benchmarks suggest that the F-series models on average perform slightly faster than non-F models. Finally, KF-series CPUs are unlocked processors with their graphics subsystem disabled. 
Standard / optional operating systems
Industry-leading multi-monitor software
16GB - 32GB DDR4-2666 memory
Fast M.2 NVMe SSDs (solid state drives)
Optional internal bootable backup SSD
Options and accessories
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Stratosphere Express U2
Highly affordable business workstation for up to two monitors
New model with 9th Gen Intel CPUs, faster SSDs and new low pricing!
- New! Save hundreds of dollars with new low pricing!
- New! Latest & fastest 9th Generation Intel processors with 6 - 8 CPU cores
- Base Intel Core i5-9600KF CPU with 6 cores processing 6 threads, 3.7 - 4.6GHz
- Optional Intel Core i7-9700KF CPU with 8 cores / 8 threads, 3.6 - 4.9GHz
- Top-of-line Intel Core i9-990KF CPU with 8 cores processing 16 threads, 3.6 - 5.0GHz
- 16GB memory, upgradable to 32GB
- Built to order with your choice of Windows 10 Home or Pro
- Free LIFETIME expert support with remote login / diagnostics
Standard Graphics: Intel UHD 630
- Simultaneous independent monitors: 2
- Ports: 1× DisplayPort 1.2, 1× HDMI 1.4; optional HDMI/DVI adapters
- Optional graphics: NVIDIA GeForce GTX 1650 4GB,
AMD Radeon RX 570 4GB
Yes! 
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