Gigabyte AI TOP ATOM Review: $7,312 at CDW, Up From $3,999.99 at Launch

CDW advertised Gigabyte's AI TOP ATOM with 128 GB of memory and a 4 TB SSD at $7,312 on Nov. 2, 2026, against a $7,999.99 list price and 83% above its $3,999.99 launch price.

That price is the news for buyers, because the machine itself has been measured. StorageReview ran the AI TOP ATOM through its vLLM serving tests in March, and ServeTheHome measured its wall power the same week. Both found NVIDIA's GB10 reference design in a black Gigabyte chassis, with speed that tracks the other GB10 boxes. What changed since then is the cost: in March, ServeTheHome described Gigabyte's GB10 boxes as about $700 cheaper than NVIDIA's own DGX Spark. On CDW's Nov. 2 listing, the 4 TB model now costs $362 more than the $6,950 NVIDIA showed for its 4 TB DGX Spark on Oct. 31. Voltgrid did not test the unit; every figure below names the outlet that measured it.

What's new in the Gigabyte AI TOP ATOM

The chip is not new. Gigabyte's Oct. 13, 2025 release puts the AI TOP ATOM on NVIDIA's GB10 Grace Blackwell Superchip with 128 GB of unified memory, rates it at up to 1 petaFLOP of FP4 compute, and says it runs models of up to 200 billion parameters, or 405 billion with two units linked through the built-in ConnectX-7 network card. NVIDIA states the same 1 PFLOP FP4 figure for GB10 using its sparsity feature. Gigabyte said the box would go on sale worldwide on Oct. 15, 2025.

Unified memory is the design choice that matters here. The CPU and GPU read one 128 GB pool of LPDDR5x over a 256-bit bus at 273 GB/s, StorageReview's spec table shows, so the GPU can hold a 120-billion-parameter model such as gpt-oss-120b in one piece. The same 273 GB/s caps how fast each new token can be generated, because every token reads the model's active weights from that memory.

What Gigabyte controls is the box around the board. ServeTheHome found no front ports or buttons, a power button on the back, two 3 W Delta fans on a large heatsink, and an M.2 2242 SSD slot wired to PCIe 5.0 x4. Gigabyte sells a 1 TB model and two 4 TB models, and only the top 4 TB version ships a PCIe 5.0 drive, ServeTheHome said; the others use PCIe 4.0. StorageReview's 4 TB unit carried Samsung's PM9E1 Gen5 drive.

Software comes from NVIDIA: DGX OS, a version of Ubuntu, plus NVIDIA Sync, the DGX Dashboard, AI Workbench and the DGX Spark Playbooks, ServeTheHome reported. Gigabyte adds its AI TOP Utility for fine-tuning and inference, according to its release. In the US, ServeTheHome said, Gigabyte works with AVADirect to offer next-day on-site repair.

What it solves

The AI TOP ATOM lets a team run a 120-billion-parameter model on a desk without a cloud account or a server room. StorageReview served OpenAI's gpt-oss-120b with the vLLM online serving benchmark, at equal input and output lengths, and measured 60.71 tokens per second at batch 1, rising to 649.62 tokens per second in aggregate at batch 64. The review does not state the model's precision. With prompt-heavy requests the total reached 2,771.38 tokens per second at batch 64; with output-heavy requests it ran from 47.01 to 299.41.

Smaller models scale further on the same test. StorageReview measured gpt-oss-20b from 641.73 to 1,587.62 tokens per second, Qwen3 Coder 30B A3B in FP8 from 101.27 to 1,251.84, and Llama 3.1 8B Instruct in FP4 from 69.84 to 2,756.91, each from batch 1 to batch 64. The shape matters more than any one number: one user gets about 60 tokens per second from gpt-oss-120b, while a team sharing the box gets roughly ten times that in total.

Storage is the other problem it solves. With the PM9E1, StorageReview measured NVIDIA's GPU Direct Storage reads, which move data from the SSD to the GPU without passing through the CPU, at 11.03 to 11.12 GiB/s from 8 to 64 threads, and 1 MB writes at about 12.2 GiB/s. It called these some of the strongest results in its group of GB10 systems.

Pros and Cons

The speed figures come from separate StorageReview reviews that used the same vLLM benchmark: Gigabyte, Dell, ASUS and Acer in March, and HP's ZGX Nano in an April review. StorageReview put the AI TOP ATOM in the middle of the field and said separation between GB10 boxes is narrow. ServeTheHome's own runs agree: Geekbench 6 placed the AI TOP ATOM a few percent behind ASUS's Ascent GX10, and its AI tests showed a spread the outlet put down to normal run-to-run variation. After more than an hour of heat soak, the Gigabyte box came out a few percent ahead of NVIDIA's DGX Spark in most of ServeTheHome's eight AI tests, winning three and tying one.

The heat comes with that small edge. StorageReview logged a 90°C CPU peak and an 81°C GPU peak during prompt-heavy bursts, toward the upper bound of its group, with GPU power peaking at 75.54 W, at the top end of the GB10 units it tested. Temperatures levelled off under sustained output-heavy load, and StorageReview read the peaks as a power-allocation choice, not a cooling failure. The NVMe drive stayed at or below 59.8°C. The idle figure has a cause: ServeTheHome said unplugging the ConnectX-7 link saves about 18 W. At 36.5 W around the clock, an idle box draws about 320 kWh a year.

Who the Gigabyte AI TOP ATOM is for

It fits a small team that shares one machine for a model in the 120B class. StorageReview's 649.62 tokens per second at batch 64 on gpt-oss-120b is aggregate capacity across up to 64 concurrent requests, at a sustained draw that ServeTheHome measured at 102 to 158 W.

It fits a developer building for NVIDIA's data-center stack. The software is NVIDIA's DGX OS, and the two 200 Gbps ports let two units pool memory for models up to 405 billion parameters, by Gigabyte's claim.

It fits data-heavy work on the top 4 TB model, where StorageReview's GPU Direct Storage results put it near the front of the GB10 group.

It does not fit a single user chasing tokens per second on a budget. All GB10 boxes share the 273 GB/s memory that limits output speed, and StorageReview measured just 60.71 tokens per second at batch 1 on gpt-oss-120b for this unit. At CDW's $7,312, the same chip is available for less: ASUS listed its 1 TB Ascent GX10 at $5,999 on Oct. 30, though its US store showed it out of stock on Nov. 2, and NVIDIA lists 64 GB partner systems from $4,999.

How it compares with DGX Spark, HP ZGX Nano and Dell

Every rival here uses the same GB10 chip, the same 128 GB of memory and the same 273 GB/s, so price and the chassis decide. On StorageReview's vLLM test with gpt-oss-120b at batch 64, the AI TOP ATOM's 649.62 tokens per second sits below Dell's Pro Max with GB10 (now listed as Pro Precision) at 670.83, ASUS at 680, Acer's Veriton GN100 at 713.18 and HP's ZGX Nano at 722.9. Each comes from a separate StorageReview review on the same gpt-oss-120b vLLM test, with precision unstated, and the HP figure is from an April review.

NVIDIA's DGX Spark, as Voltgrid reported, lists at $6,950 for 128 GB and 4 TB on NVIDIA's marketplace, though its stock was unverified on Oct. 31. That makes the Gigabyte box at CDW $362 dearer, reversing the gap ServeTheHome described in March, when it priced Gigabyte's 4 TB model at about $4,000 against $4,699 for the Spark.

HP's ZGX Nano is the cooler-running alternative: Notebookcheck reported $7,399 at the HP Store for 4 TB. Dell's Pro Precision with GB10 read $7,967 on Dell.com later on Nov. 2 for a 2 TB Gen4 QLC model, after $8,103 earlier that day, and StorageReview logged its CPU near 87.7°C, below Gigabyte's 90°C. On storage, the Gigabyte and NVIDIA boxes both use the PM9E1 Gen5 drive on their top models.

The table under this story shows each catalog value with its source. What it says, read across: StorageReview's separate reviews put the boxes close together on speed, while listed 4 TB prices read $6,950 (NVIDIA, Oct. 31) to $7,399 (HP Store, per Notebookcheck, Oct. 5), with CDW's Gigabyte at $7,312 on Nov. 2.

What to watch

Prices first. ServeTheHome warned in March that GB10 prices were being reset for DRAM costs, and CDW's Nov. 2 figure shows how far that went: $7,312, up from $3,999.99 for the 4 TB Gen5 model at launch on Newegg, as CNX Software reported in October 2025. Whether CDW's advertised price holds through November 2026 is the first test. CDW's listing does not say whether model ATAGB10-9000 carries the Gen5 or the Gen4 drive, and Gigabyte's US site could not be read to confirm a list price.

NVIDIA now lists 64 GB partner systems from $4,999, and no Gigabyte 64 GB listing has appeared yet. NVIDIA reports its third-quarter fiscal 2027 results on Nov. 17, 2026, the next chance for word on GB10 supply and memory costs. Independent single-user numbers from llama.cpp or Ollama on this unit are still missing.