ATI Radeon HD 3830

The ATI Radeon HD 3830 is an AMD graphics processor built on the TeraScale architecture, fabricated by TSMC on a 55 nm process. The RV670 chip contains 666 million transistors on a 192 mm² die, yielding a transistor density of 3.5 million per square millimeter. Released on March 31, 2008, it belongs to the Radeon R600 (HD 3800) generation, succeeding the Radeon R500 PCIe series and preceding the Radeon R700. The card is now end-of-life. Its specification sheet is notable for what it omits: there are no display outputs, no ray tracing cores, and no tensor cores. The card relies on 320 shading units, 16 texture mapping units, and 16 raster operation units. It has a 75 W thermal design power, a dual-slot form factor, and a single 6-pin power connector. This is a part defined more by its limitations than its capabilities.

Power and Cooling

The HD 3830 draws a maximum of 75 W under load, according to its thermal design power specification. That figure places it within the range of what a modest power supply can handle, and the suggested PSU rating is 250 W. The card requires a single 6-pin power connector, so any power supply with that cable will suffice. The dual-slot form factor indicates a substantial heatsink and fan assembly; the card occupies two expansion slots to dissipate heat. Because the TDP is a hard ceiling, cooling requirements are modest, and the dual-slot design provides ample surface area for heat exchange. The 55 nm process node keeps the transistor count of 666 million contained within a 192 mm² die, which contributes to the low power envelope. The 75 W figure is consistent with a mid-range part of its generation. The absence of display outputs means the card does not need to drive display controllers, which may slightly reduce the thermal load, though the TDP already accounts for the entire board. For system builders, the 250 W suggested PSU is a low barrier to entry, but the dual-slot cooler means physical space is a consideration. The single 6-pin connector is a standard requirement; no additional auxiliary power is listed. The power and cooling profile is unremarkable and easy to accommodate, provided the system has a free 6-pin cable and two slot widths of clearance.

Ray Tracing and Feature Set

The HD 3830 has no ray tracing cores and no tensor cores — both fields are null in its specification. This is unsurprising for a 2008 product built on the TeraScale architecture, which does not include hardware ray tracing support. The card's API support is DirectX 10.1 with a 10_1 feature level. That means it supports the DirectX 10.1 feature set, which includes improved shader model capabilities and better anti-aliasing options compared to DirectX 10.0. On the OpenGL side, the card supports version 3.3 in full and version 4.0 partially. Partial OpenGL 4.0 support indicates that some but not all of the specification's features are available. Vulkan is not supported at all. For modern applications that rely on Vulkan or other current APIs, this card is entirely incompatible. The 320 shading units are the compute cores that execute shader programs defined by these APIs. The 16 texture mapping units handle texture fetching and filtering, while the 16 raster operation units perform pixel blending and depth testing. The FP32 performance of 427.5 GFLOPS is the peak single-precision compute rate, which is the ceiling for any shader work. The absence of tensor cores means no machine learning or AI acceleration. The absence of ray tracing cores means any ray-traced effects would have to be computed in software, which is impractical given the modest FP32 throughput. The feature set is firmly rooted in the late-2000s, and the card cannot participate in modern graphics pipelines that require current API support or hardware ray tracing.

Benchmark Performance

The benchmark database contains no recorded scores for the HD 3830. The average benchmark score is 0, and the percentile rank against all GPUs is 50. The 50th percentile is a neutral position; it does not indicate that the card outperforms half of all GPUs, but rather that the absence of data places it at the median of the distribution. Without benchmark scores, the only quantitative performance indicators are the fill rates and compute throughput. The pixel rate is 10.69 GPixel/s, and the texture rate is 10.69 GTexel/s. These two figures are identical because the card has 16 ROPs and 16 TMUs operating in the same clock domain. The FP32 compute rate is 427.5 GFLOPS, derived from the 320 shading units. To interpret these numbers, the pixel rate determines how quickly the card can fill the screen with rendered pixels; 10.69 GPixel/s means it can theoretically output over ten billion pixels per second. The texture rate of 10.69 GTexel/s indicates the speed at which texture samples are fetched and filtered. The FP32 rate of 427.5 GFLOPS is the ceiling for vertex processing and shader computations. Because there are no nearest rivals listed in the database, no comparative deltas can be calculated. The card's performance relative to other GPUs must be inferred from its raw throughput figures alone. The equal pixel and texture rates suggest a balanced architecture, but the small memory subsystem — 256 MB and 26.50 GB/s — will likely bottleneck these throughputs in real workloads. In the absence of measured results, the specification data suggests a card that is competent for its era but far below modern standards.

Who Should Consider It

The most important fact about the HD 3830 is that it has no display outputs. The specification lists "No outputs" for the display outputs field. This means the card cannot be connected to a monitor, projector, or any display device. Therefore, it cannot serve as a primary graphics card for a desktop system. It is not a candidate for gaming, desktop productivity, or any visual output task. The card's purpose is compute-only. Users who might consider it are those building or maintaining a system that needs auxiliary processing power — for example, a dedicated physics processor or a compute offload device. The 75 W TDP and 250 W suggested PSU make it easy to slot into an existing system, provided there is a free 6-pin power connector and a dual-slot space. The 427.5 GFLOPS FP32 rate offers a modest amount of single-precision compute, which could handle simple scientific calculations or legacy compute workloads. However, with no benchmark scores and no Vulkan support, the card is limited to older compute frameworks. The 10.69 GPixel/s pixel rate and 10.69 GTexel/s texture rate suggest that it could handle texture-heavy compute tasks, but the 256 MB memory capacity will restrict data sets to small sizes. For high-resolution rendering, the card is unsuitable, both because of the lack of outputs and because the memory bandwidth of 26.50 GB/s is insufficient for large framebuffers. The 50th percentile rank, while not a performance measure, indicates that the database treats it as a middle-of-the-road part. In practice, this card is a niche product for legacy compute applications.

Memory Subsystem

The HD 3830 is equipped with 256 MB of GDDR3 memory. The bus width is 128 bits, which is a narrow interface by modern standards. The memory clock is 828 MHz, with an effective data rate of 1656 Mbps. The total memory bandwidth is 26.50 GB/s, calculated from the 128-bit bus and the effective clock rate. This bandwidth is the maximum rate at which data can be read from or written to the frame buffer. For a card with a pixel rate of 10.69 GPixel/s, the memory bandwidth must be sufficient to feed the ROPs with pixel data. At 26.50 GB/s, each pixel receives a limited share of data at peak fill rate, which is a severe constraint for texture-heavy scenes. The 256 MB capacity is also limiting; high-resolution textures and large geometry buffers will exceed this capacity quickly, forcing the card to swap data in and out of the relatively slow GDDR3 memory. The 128-bit bus width means that memory transactions are half the width of a 256-bit bus, a common configuration for mid-range cards of that era. For high resolutions, the combination of small capacity and limited bandwidth is a bottleneck. The effective memory speed of 1656 Mbps corresponds to the 828 MHz clock. The 26.50 GB/s figure is the aggregate bandwidth across the 128-bit bus. In practice, this memory subsystem would struggle with high resolutions, and even at lower resolutions, texture streaming could cause hitches. The 16 ROPs can generate up to 10.69 GPixel/s, but the memory bandwidth caps the sustainable throughput. The data shows a memory subsystem that is balanced for its time but wholly inadequate for modern workloads.